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a in (-oo:+oo)
a-(3*a)-(1/9)-(3/8) = 41-(8/4) // - 41-(8/4)
a-(3*a)-(1/9)-(3/8)+8/4-41 = 0
a-3*a-1/9-3/8+8/4-41 = 0
-2*a-2843/72 = 0 // + 2843/72
-2*a = 2843/72 // : -2
a = 2843/72/(-2)
a = -2843/144
a = -2843/144
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