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x in (-oo:+oo)
x/4 = 7.25 // - 7.25
x/4-7.25 = 0
1/4*x-7.25 = 0 // + 7.25
1/4*x = 7.25 // : 1/4
x = 7.25/1/4
x = 29
x = 29
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