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x in (-oo:+oo)
(90/100)*x = 148 // - 148
(90/100)*x-148 = 0
9/10*x-148 = 0 // + 148
9/10*x = 148 // : 9/10
x = 148/9/10
x = 1480/9
x = 1480/9
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