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(2*x+10)/3 = 4 // - 4
(2*x+10)/3-4 = 0
(2*x+10)/3+(-4*3)/3 = 0
2*x-4*3+10 = 0
2*x-2 = 0
(2*x-2)/3 = 0
(2*x-2)/3 = 0 // * 3
2*x-2 = 0
2*x-2 = 0 // + 2
2*x = 2 // : 2
x = 2/2
x = 1
x = 1
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