1/7(21y+21)-7=-1/9(9y-36)

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Solution for 1/7(21y+21)-7=-1/9(9y-36) equation: 


y in (-oo:+oo)

(1/7)*(21*y+21)-7 = (-1/9)*(9*y-36) // - (-1/9)*(9*y-36)

(1/7)*(21*y+21)-((-1/9)*(9*y-36))-7 = 0

(1/7)*(21*y+21)+(1/9)*(9*y-36)-7 = 0

1/7*(21*y+21)+1/9*(9*y-36)-7 = 0

1/7*(21*y+21)+1/9*(9*y-36)-7 = 0

4*y-7-1 = 0

4*y-8 = 0

4*y-8 = 0

4*y-8 = 0 // + 8

4*y = 8 // : 4

y = 8/4

y = 2

y = 2

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