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(2/3)*(7*x-(1/6))-(3/4) = 1/4 // - 1/4
(2/3)*(7*x-(1/6))-(3/4)-(1/4) = 0
(2/3)*(7*x-1/6)-3/4-1/4 = 0
2/3*(7*x-1/6)-3/4-1/4 = 0
(2/3*4*(7*x-1/6))/4-3/4-1/4 = 0
2/3*4*(7*x-1/6)-3-1 = 0
56/3*x-31/9-1 = 0
56/3*x-40/9 = 0
(56/3*x-40/9)/4 = 0
(56/3*x-40/9)/4 = 0 // * 4
56/3*x-40/9 = 0
56/3*x-40/9 = 0 // + 40/9
56/3*x = 40/9 // : 56/3
x = 40/9/56/3
x = 5/21
x = 5/21
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