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x in (-oo:+oo)
(1/2)*x+2/7 = 44/7 // - 44/7
(1/2)*x+2/7-(44/7) = 0
(1/2)*x+2/7-44/7 = 0
1/2*x-6 = 0 // + 6
1/2*x = 6 // : 1/2
x = 6/1/2
x = 12
x = 12
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