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5*x+4/2 = 7*x-(8/4)+7 // - 7*x-(8/4)+7
5*x-(7*x)+4/2+8/4-7 = 0
5*x-7*x+4/2+8/4-7 = 0
-2*x-3 = 0 // + 3
-2*x = 3 // : -2
x = 3/(-2)
x = -3/2
x = -3/2
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