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2*(x/2+7)+3*x = 238 // - 238
2*(x/2+7)+3*x-238 = 0
2*(1/2*x+7)+3*x-238 = 0
2*(1/2*x+7)+3*x-238 = 0
4*x-238+14 = 0
4*x-224 = 0
4*x-224 = 0
4*x-224 = 0 // + 224
4*x = 224 // : 4
x = 224/4
x = 56
x = 56
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