1/5(5y+10)-9=-1/7(21y-35)

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Solution for 1/5(5y+10)-9=-1/7(21y-35) equation: 


y in (-oo:+oo)

(1/5)*(5*y+10)-9 = (-1/7)*(21*y-35) // - (-1/7)*(21*y-35)

(1/5)*(5*y+10)-((-1/7)*(21*y-35))-9 = 0

(1/5)*(5*y+10)+(1/7)*(21*y-35)-9 = 0

1/5*(5*y+10)+1/7*(21*y-35)-9 = 0

1/5*(5*y+10)+1/7*(21*y-35)-9 = 0

4*y-9-3 = 0

4*y-12 = 0

4*y-12 = 0

4*y-12 = 0 // + 12

4*y = 12 // : 4

y = 12/4

y = 3

y = 3

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