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(1/7)*(7*x-8) = -2/3-(8/3) // + -2/3-(8/3)
(1/7)*(7*x-8)-(-2/3)+8/3 = 0
(1/7)*(7*x-8)+2/3+8/3 = 0
1/7*(7*x-8)+2/3+8/3 = 0
(1/7*3*(7*x-8))/3+2/3+8/3 = 0
1/7*3*(7*x-8)+2+8 = 0
3*x-10/7+8 = 0
3*x+46/7 = 0
(3*x+46/7)/3 = 0
(3*x+46/7)/3 = 0 // * 3
3*x+46/7 = 0
3*x+46/7 = 0 // - 46/7
3*x = -46/7 // : 3
x = -46/7/3
x = -46/21
x = -46/21
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