-7=-5/9y

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Solution for -7=-5/9y equation: 


y in (-oo:+oo)

-7 = (-5/9)*y // - (-5/9)*y

-((-5/9)*y)-7 = 0

(5/9)*y-7 = 0

5/9*y-7 = 0 // + 7

5/9*y = 7 // : 5/9

y = 7/5/9

y = 63/5

y = 63/5

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