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x in (-oo:+oo)
(-3/7)*x+1/2 = -59/14 // + -59/14
(-3/7)*x+1/2-(-59/14) = 0
(-3/7)*x+1/2+59/14 = 0
33/7-3/7*x = 0 // - 33/7
-3/7*x = -33/7 // : -3/7
x = -33/7/(-3/7)
x = 11
x = 11
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