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a in (-oo:+oo)
4*a+(3/4)*a+10 = -55/4 // + -55/4
4*a+(3/4)*a-(-55/4)+10 = 0
4*a+(3/4)*a+55/4+10 = 0
19/4*a+95/4 = 0 // - 95/4
19/4*a = -95/4 // : 19/4
a = -95/4/19/4
a = -5
a = -5
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