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4*(x+3)-((1/2)*x) = 22 // - 22
4*(x+3)-((1/2)*x)-22 = 0
4*(x+3)+(-1/2)*x-22 = 0
4*(x+3)-x/2-22 = 0
(2*4*(x+3))/2-x/2+(-22*2)/2 = 0
2*4*(x+3)-x-22*2 = 0
7*x-44+24 = 0
7*x-20 = 0
(7*x-20)/2 = 0
(7*x-20)/2 = 0 // * 2
7*x-20 = 0
7*x-20 = 0 // + 20
7*x = 20 // : 7
x = 20/7
x = 20/7
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