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45/2-((3/4)*x) = 3*(x-5) // - 3*(x-5)
45/2-(3*(x-5))-((3/4)*x) = 0
(-3/4)*x-3*(x-5)+45/2 = 0
(-3*x)/4-3*(x-5)+45/2 = 0
(-3*2*4*(x-5))/(2*4)+(-3*2*x)/(2*4)+(4*45)/(2*4) = 0
4*45-3*2*4*(x-5)-3*2*x = 0
120-30*x+180 = 0
300-30*x = 0
(300-30*x)/(2*4) = 0
(300-30*x)/(2*4) = 0 // * 2*4
300-30*x = 0
300-30*x = 0 // - 300
-30*x = -300 // : -30
x = -300/(-30)
x = 10
x = 10
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