y/2-7=-9 - solution

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Solution for y/2-7=-9 equation:

y in (-oo:+oo)

y/2-7 = -9 // + 9

y/2-7+9 = 0

1/2*y+2 = 0 // - 2

1/2*y = -2 // : 1/2

y = -2/1/2

y = -4

y = -4

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