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x in (-oo:+oo)
(-4/5)*x-7 = -183/25 // + -183/25
(-4/5)*x-(-183/25)-7 = 0
(-4/5)*x+183/25-7 = 0
8/25-4/5*x = 0 // - 8/25
-4/5*x = -8/25 // : -4/5
x = -8/25/(-4/5)
x = 2/5
x = 2/5
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