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7-((1/4)*x) = 33/4 // - 33/4
7-((1/4)*x)-(33/4) = 0
(-1/4)*x-33/4+7 = 0
-1/4*x-5/4 = 0 // + 5/4
-1/4*x = 5/4 // : -1/4
x = 5/4/(-1/4)
x = -5
x = -5
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