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a in (-oo:+oo)
(1/4)*(a+8) = 24 // - 24
(1/4)*(a+8)-24 = 0
1/4*(a+8)-24 = 0
1/4*(a+8)-24 = 0
1/4*a-22 = 0
1/4*a-22 = 0
1/4*a-22 = 0 // + 22
1/4*a = 22 // : 1/4
a = 22/1/4
a = 88
a = 88
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