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Math Help - Help really needed

  1. #1
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    Help really needed

    Can someone solve this equation'

    10x+25y=750
    2y=x
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  2. #2
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by Michelle Belford View Post
    Can someone solve this equation'

    10x+25y=750
    2y=x
    in the second equation, you have an expression in y for x. it means you can replace x with 2y in the first equation and then you can solve for y. once you have y you can solve for x
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  3. #3
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    plug 2y in for x

    10(2y) + 25y =750
    20y + 25y =750
    45y = 750
    divide both side by 45
    that gives you y=
    now plug whatever y is into the original eqn and you now have x

    hope that helps!
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