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2*x-5 = -x/7 // + -x/7
2*x-(-x/7)-5 = 0
2*x+(1/7)*x-5 = 0
15/7*x-5 = 0 // + 5
15/7*x = 5 // : 15/7
x = 5/15/7
x = 7/3
x = 7/3
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