4/5-7=-2y - solution

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Solution for 4/5-7=-2y equation:

y in (-oo:+oo)

4/5-7 = -2*y // + -2*y

4/5-(-2*y)-7 = 0

2*y+4/5-7 = 0

2*y-31/5 = 0 // + 31/5

2*y = 31/5 // : 2

y = 31/5/2

y = 31/10

y = 31/10

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