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x/4-3 = -2*x // + -2*x
x/4-(-2*x)-3 = 0
x/4+2*x-3 = 0
9/4*x-3 = 0 // + 3
9/4*x = 3 // : 9/4
x = 3/9/4
x = 4/3
x = 4/3
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