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19 October, 20:37

What is the substitution for 5x+2 (8-4x) = 7

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  1. 20 October, 00:18
    0
    x=3

    Step-by-step explanation:

    5x+2 (8-4x) = 7

    multiply parentheses by 2

    5x+16-8x=7

    collect like terms

    -3x+16=7

    move constant to right

    3x=7-16

    calculate

    -3x=-9

    divide both sides by - 3

    x=3
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