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Math Help - [SOLVED] Solve for x

  1. #1
    wizkid
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    [SOLVED] Solve for x

    Can someone please show me how to do this equation 5x-3 = 2x+12
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  2. #2
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    Quote Originally Posted by wizkid View Post
    Can someone please show me how to do this equation 5x-3 = 2x+12
    Subtract 2x from both sides: 3x - 3 = 12.
    Add 3 to both sides: 3x = 15
    Divide 3 from both sides: x=5
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  3. #3
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by wizkid View Post
    Can someone please show me how to do this equation 5x-3 = 2x+12
    when you want to solve an equation for a variable, your objective is to get that variable on one side of the equal sign by itself.

    5x - 3 = 2x + 12 .........first try to get all the terms with x's on one side

    => 5x - 3 - 2x = 12 .....i subtracted 2x from both sides. now i want to get rid of the -3 on the left

    => 5x - 2x = 12 + 3 .....i added 3 to both sides, now simplify

    => 3x = 15 .................i still don't have x by itself, i have 3 times x on the left, let's get rid of the 3

    => x = 15/3 ...............i divided by 3 on both sides

    => x = 5 ...................i simplified
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