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(1/4)*x-(2*x)-(7/4) = 0
(1/4)*x-2*x-7/4 = 0
-7/4*x-7/4 = 0 // + 7/4
-7/4*x = 7/4 // : -7/4
x = 7/4/(-7/4)
x = -1
x = -1
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