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a in (-oo:+oo)
7/8 = a/88 // - a/88
7/8-(a/88) = 0
7/8-1/88*a = 0 // - 7/8
-1/88*a = -7/8 // : -1/88
a = -7/8/(-1/88)
a = 77
a = 77
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