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(7*(x+2))/4-5 = 16 // - 16
(7*(x+2))/4-16-5 = 0
(7*(x+2))/4+(-16*4)/4+(-5*4)/4 = 0
7*(x+2)-16*4-5*4 = 0
7*x-50-20 = 0
7*x-70 = 0
(7*x-70)/4 = 0
(7*x-70)/4 = 0 // * 4
7*x-70 = 0
7*x-70 = 0 // + 70
7*x = 70 // : 7
x = 70/7
x = 10
x = 10
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