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(-5/2)*x+(3/4)*x = -3/4 // + -3/4
(-5/2)*x+(3/4)*x-(-3/4) = 0
(-5/2)*x+(3/4)*x+3/4 = 0
3/4-7/4*x = 0 // - 3/4
-7/4*x = -3/4 // : -7/4
x = -3/4/(-7/4)
x = 3/7
x = 3/7
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