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Math Help - Can somebody help me rearrange this formula please?

  1. #1
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    Can somebody help me rearrange this formula please?

    I've been trying to figure this out for hours now. could anybody help out?

    I have to make x the subject of the formula

    7 = 3 + x

    any help would be greatly appreciated because this is driving me insane
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  2. #2
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    Quote Originally Posted by Mikeysharkface View Post
    I've been trying to figure this out for hours now. could anybody help out?

    I have to make x the subject of the formula

    7 = 3 + x

    any help would be greatly appreciated because this is driving me insane
    I'm not sure what you are looking for but the only thing that can be done is

    x = -3 + 7
    x = 4
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  3. #3
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    Quote Originally Posted by Mikeysharkface View Post
    I have to make x the subject of the formula
    7 = 3 + x
    C'mon Mikey: 3 + WHAT = 7 ? Yes, it's that simple

    And that's not a "formula"; it's an equation.
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  4. #4
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    I am looking to make x the subject so x= (something)

    so you subtracted x from both sides to give 7 - x = 3?
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  5. #5
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    Wilmer
    I could figure it out if it was a simple equation like that because the answer is obviously 4. But the questionvwhich i have to answer says:
    Make x the subject of the formula 7 = 3 + x
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  6. #6
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    Quote Originally Posted by Mikeysharkface View Post
    I am looking to make x the subject so x= (something)

    so you subtracted x from both sides to give 7 - x = 3?
    try subtracting 3
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  7. #7
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    Melvis
    If I subtracted 3 from 7 = 3 + x it would leave me with x = 4

    it can't be that easy, surely
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  8. #8
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    Quote Originally Posted by Mikeysharkface View Post
    Melvis
    If I subtracted 3 from 7 = 3 + x it would leave me with x = 4

    it can't be that easy, surely
    Your terminology is odd to me. I've never heard "make x the subject." What I have heard is, "Solve for x." And yes, it's that easy.
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  9. #9
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    Quote Originally Posted by Mikeysharkface View Post
    If I subtracted 3 from 7 = 3 + x it would leave me with x = 4
    it can't be that easy, surely
    YES it is that simple. Yer suffering of "paralysis by analysis"

    x is equal to four ; x = subject, is = verb, ....
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  10. #10
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    Thanks guys, very much appreciate your help.

    I'll let you know how I get on
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  11. #11
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    undefined
    Quote Originally Posted by undefined View Post
    Your terminology is odd to me. I've never heard "make x the subject." What I have heard is, "Solve for x." And yes, it's that easy.
    it's a rearranging forumla question
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  12. #12
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    Thanks for the help!

    It was that simple, cheers guys.
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