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-((3/7)*x)-7/2 = -8/3 // + -8/3
-((3/7)*x)-7/2-(-8/3) = 0
(-3/7)*x-7/2+8/3 = 0
-3/7*x-5/6 = 0 // + 5/6
-3/7*x = 5/6 // : -3/7
x = 5/6/(-3/7)
x = -35/18
x = -35/18
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