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28 August, 15:43

2.8y + 6 + 0.2y = 5y - 15

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  1. 28 August, 17:12
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    Simplify 2.8y + 6 + 0.2y to 3y + 6

    subtract 3y from both sides

    simplify 5y - 15 - 3y to 2y - 15

    add 15 to both sides

    simplify 6 + 15 to 21

    divide both sides by 2

    switch sides

    Answer: y = 21/2

    *in decimal form this would be 10.5
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