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x in (-oo:+oo)
-7*x-(3/4) = 277/4 // - 277/4
-7*x-(3/4)-(277/4) = 0
-7*x-3/4-277/4 = 0
-7*x-70 = 0 // + 70
-7*x = 70 // : -7
x = 70/(-7)
x = -10
x = -10
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