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(-5/7)*x-3 = -179/63 // + -179/63
(-5/7)*x-(-179/63)-3 = 0
(-5/7)*x+179/63-3 = 0
-5/7*x-10/63 = 0 // + 10/63
-5/7*x = 10/63 // : -5/7
x = 10/63/(-5/7)
x = -2/9
x = -2/9
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