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x in (-oo:+oo)
(-1/2)*x+1/10 = 7*x-59/10 // - 7*x-59/10
(-1/2)*x-(7*x)+1/10-(-59/10) = 0
(-1/2)*x-7*x+1/10+59/10 = 0
6-15/2*x = 0 // - 6
-15/2*x = -6 // : -15/2
x = -6/(-15/2)
x = 4/5
x = 4/5
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