3*((10-y)/3)+7y=70

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Solution for 3*((10-y)/3)+7y=70 equation: 


y in (-oo:+oo)

3*((10-y)/3)+7*y = 70 // - 70

3*((10-y)/3)+7*y-70 = 0

(3*(10-y))/3+7*y-70 = 0

(3*(10-y))/3+(3*7*y)/3+(-70*3)/3 = 0

3*(10-y)+3*7*y-70*3 = 0

18*y-210+30 = 0

18*y-180 = 0

(18*y-180)/3 = 0

(18*y-180)/3 = 0 // * 3

18*y-180 = 0

18*y-180 = 0 // + 180

18*y = 180 // : 18

y = 180/18

y = 10

y = 10

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