1/2y-(y+7/9)=1/36(y-7)

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Solution for 1/2y-(y+7/9)=1/36(y-7) equation: 


y in (-oo:+oo)

(1/2)*y-y-(7/9) = (1/36)*(y-7) // - (1/36)*(y-7)

(1/2)*y-((1/36)*(y-7))-y-(7/9) = 0

(-1/36)*(y-7)+(1/2)*y-y-7/9 = 0

y/2-1/36*(y-7)-y-7/9 = 0

(-1/36*2*9*(y-7))/(2*9)+(9*y)/(2*9)+(2*9*(-y))/(2*9)+(-7*2)/(2*9) = 0

9*y-1/36*2*9*(y-7)+2*9*(-y)-7*2 = 0

17/2*y-18*y-14+7/2 = 0

7/2-19/2*y-14 = 0

-19/2*y-21/2 = 0

(-19/2*y-21/2)/(2*9) = 0

(-19/2*y-21/2)/(2*9) = 0 // * 2*9

-19/2*y-21/2 = 0

-19/2*y-21/2 = 0 // + 21/2

-19/2*y = 21/2 // : -19/2

y = 21/2/(-19/2)

y = -21/19

y = -21/19

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