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x in (-oo:+oo)
x/7+6 = 4*x-27 // - 4*x-27
x/7-(4*x)+6+27 = 0
x/7-4*x+6+27 = 0
33-27/7*x = 0 // - 33
-27/7*x = -33 // : -27/7
x = -33/(-27/7)
x = 77/9
x = 77/9
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