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(4-(5*x))/6 = 7 // - 7
(4-(5*x))/6-7 = 0
(4-5*x)/6-7 = 0
(4-5*x)/6+(-7*6)/6 = 0
4-5*x-7*6 = 0
-5*x-38 = 0
(-5*x-38)/6 = 0
(-5*x-38)/6 = 0 // * 6
-5*x-38 = 0
-5*x-38 = 0 // + 38
-5*x = 38 // : -5
x = 38/(-5)
x = -38/5
x = -38/5
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