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(3/4)*(x+5) = 3*x-3 // - 3*x-3
(3/4)*(x+5)-(3*x)+3 = 0
(3/4)*(x+5)-3*x+3 = 0
3/4*(x+5)-3*x+3 = 0
3/4*(x+5)-3*x+3 = 0
3-9/4*x+15/4 = 0
27/4-9/4*x = 0
27/4-9/4*x = 0
27/4-9/4*x = 0 // - 27/4
-9/4*x = -27/4 // : -9/4
x = -27/4/(-9/4)
x = 3
x = 3
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