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(1/2)*(4*x-17) = (2/3)*(10*x+42) // - (2/3)*(10*x+42)
(1/2)*(4*x-17)-((2/3)*(10*x+42)) = 0
(1/2)*(4*x-17)+(-2/3)*(10*x+42) = 0
1/2*(4*x-17)-2/3*(10*x+42) = 0
1/2*(4*x-17)-2/3*(10*x+42) = 0
-14/3*x-73/2 = 0
-14/3*x-73/2 = 0
-14/3*x-73/2 = 0 // + 73/2
-14/3*x = 73/2 // : -14/3
x = 73/2/(-14/3)
x = -219/28
x = -219/28
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