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17 June, 14:13

I forgot how to do this. - 2 (21+2y/5) + y=-8

Find y.

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  1. 17 June, 14:23
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    -2 (21+2y/5) + y=-8

    -42-4y/5+y = - 8

    -42-4y+5y/5=-8

    -42+y/5=-8

    -5*42+5*y/5=-5*8

    -210+y=-40

    y=-40+210

    y = 170

    Check

    -2 (21+2 (170) / 5) + 170=-8

    -2 (21+340/5) + 170=-8

    -2 (21+68) + 170=-8

    -2 (89) + 170 = - 8

    -178 + 170 = - 8

    -8 = - 8
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