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(2/3)*(x-7) = 18 // - 18
(2/3)*(x-7)-18 = 0
2/3*(x-7)-18 = 0
2/3*(x-7)-18 = 0
2/3*x-68/3 = 0
2/3*x-68/3 = 0
2/3*x-68/3 = 0 // + 68/3
2/3*x = 68/3 // : 2/3
x = 68/3/2/3
x = 34
x = 34
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