7.5=-9/11y+12

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Solution for 7.5=-9/11y+12 equation: 


y in (-oo:+oo)

7.5 = (-9/11)*y+12 // - (-9/11)*y+12

7.5-((-9/11)*y)-12 = 0

(9/11)*y-12+7.5 = 0

9/11*y-4.5 = 0 // + 4.5

9/11*y = 4.5 // : 9/11

y = 4.5/9/11

y = 5.49999999

y = 5.49999999

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