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Math Help - Rearrange formula?

  1. #1
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    Rearrange formula?

    Hi i am struggling with a problem, i have to rearrange a formula making B the subject.

    x=b-c/a

    If anyone could help me through this i would be very appreciative.
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  2. #2
    No one in Particular VonNemo19's Avatar
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    Quote Originally Posted by nexer View Post
    Hi i am struggling with a problem, i have to rearrange a formula making B the subject.

    x=b-c/a

    If anyone could help me through this i would be very appreciative.
    Does subject mean output?
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  3. #3
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    believe so, i need to rearrange the formula so i can work other stuff out from the rearranged formula.
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  4. #4
    Super Member Bacterius's Avatar
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    Just add c/a on both sides (unless you miswrote your equation, because it seems too easy).
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  5. #5
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    umm. . . its (b-c)/a if that makes a difference?
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  6. #6
    No one in Particular VonNemo19's Avatar
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    Quote Originally Posted by nexer View Post
    umm. . . its (b-c)/a if that makes a difference?
    In that case, mult. both sides by a, then add c to both sides.
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  7. #7
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    So i'm getting b=xa+c? looks too simple to be true. but thanks for all help.
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  8. #8
    No one in Particular VonNemo19's Avatar
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    Quote Originally Posted by nexer View Post
    So i'm getting b=xa+c? looks too simple to be true. but thanks for all help.
    Well, as I said before, I'm not entirely certain what "subject" means as it relates to math. That's a new one for me.

    I think we're right though.
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  9. #9
    Super Member Bacterius's Avatar
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    Quote Originally Posted by VonNemo19 View Post
    Well, as I said before, I'm not entirely certain what "subject" means as it relates to math. That's a new one for me.

    I think we're right though.
    I think what he means by subject is the variable one is willing to evaluate (so it is on its own on a side of the equation). It's the same term in physics too. So, I think we're right too.
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