-1/7(x-21)-1/7(x-7)=x-6

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Solution for -1/7(x-21)-1/7(x-7)=x-6 equation: 


x in (-oo:+oo)

(-1/7)*(x-21)-((1/7)*(x-7)) = x-6 // - x-6

(-1/7)*(x-21)-((1/7)*(x-7))-x+6 = 0

(-1/7)*(x-21)+(-1/7)*(x-7)-x+6 = 0

6-1/7*(x-21)-1/7*(x-7)-x = 0

6-1/7*(x-21)-1/7*(x-7)-x = 0

4-2/7*x-x+6 = 0

4-9/7*x+6 = 0

10-9/7*x = 0

10-9/7*x = 0

10-9/7*x = 0 // - 10

-9/7*x = -10 // : -9/7

x = -10/(-9/7)

x = 70/9

x = 70/9

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