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(3/7)*x+5*x-2 = -242/7 // + -242/7
(3/7)*x+5*x-(-242/7)-2 = 0
(3/7)*x+5*x+242/7-2 = 0
38/7*x+228/7 = 0 // - 228/7
38/7*x = -228/7 // : 38/7
x = -228/7/38/7
x = -6
x = -6
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