1/7(x+7)=1/21(3x+21)

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Solution for 1/7(x+7)=1/21(3x+21) equation: 


x in (-oo:+oo)

(1/7)*(x+7) = (1/21)*(3*x+21) // - (1/21)*(3*x+21)

(1/7)*(x+7)-((1/21)*(3*x+21)) = 0

(1/7)*(x+7)+(-1/21)*(3*x+21) = 0

1/7*(x+7)-1/21*(3*x+21) = 0

1/7*(x+7)-1/21*(3*x+21) = 0

0 = 0

0 = 0

x belongs to the empty set

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