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(3*x)/2 = (7*x)/5-(9/10) // - (7*x)/5-(9/10)
(3*x)/2-((7*x)/5)+9/10 = 0
(3*x)/2+(-7/5)*x+9/10 = 0
1/10*x+9/10 = 0 // - 9/10
1/10*x = -9/10 // : 1/10
x = -9/10/1/10
x = -9
x = -9
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