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3/4-x = (7/4)*x // - (7/4)*x
3/4-x-((7/4)*x) = 0
(-7/4)*x-x+3/4 = 0
3/4-11/4*x = 0 // - 3/4
-11/4*x = -3/4 // : -11/4
x = -3/4/(-11/4)
x = 3/11
x = 3/11
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