3/7(x+1)=1/21(x+4)

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Solution for 3/7(x+1)=1/21(x+4) equation: 


x in (-oo:+oo)

(3/7)*(x+1) = (1/21)*(x+4) // - (1/21)*(x+4)

(3/7)*(x+1)-((1/21)*(x+4)) = 0

(3/7)*(x+1)+(-1/21)*(x+4) = 0

3/7*(x+1)-1/21*(x+4) = 0

3/7*(x+1)-1/21*(x+4) = 0

8/21*x+5/21 = 0

8/21*x+5/21 = 0

8/21*x+5/21 = 0 // - 5/21

8/21*x = -5/21 // : 8/21

x = -5/21/8/21

x = -5/8

x = -5/8

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