1/2(c+7)=3/1+5/9c

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Solution for 1/2(c+7)=3/1+5/9c equation: 


c in (-oo:+oo)

(1/2)*(c+7) = (5/9)*c+3/1 // - (5/9)*c+3/1

(1/2)*(c+7)-((5/9)*c)-(3/1) = 0

(1/2)*(c+7)+(-5/9)*c-3 = 0

1/2*(c+7)+(-5*c)/9-3 = 0

(1/2*9*(c+7))/9+(-5*c)/9+(-3*9)/9 = 0

1/2*9*(c+7)-5*c-3*9 = 0

63/2-1/2*c-27 = 0

9/2-1/2*c = 0

(9/2-1/2*c)/9 = 0

(9/2-1/2*c)/9 = 0 // * 9

9/2-1/2*c = 0

9/2-1/2*c = 0 // - 9/2

-1/2*c = -9/2 // : -1/2

c = -9/2/(-1/2)

c = 9

c = 9

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