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x in (-oo:+oo)
77/64 = (11/8)*x // - (11/8)*x
77/64-((11/8)*x) = 0
(-11/8)*x+77/64 = 0
77/64-11/8*x = 0 // - 77/64
-11/8*x = -77/64 // : -11/8
x = -77/64/(-11/8)
x = 7/8
x = 7/8
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