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(-2/3)*x-6 = 7*x-1/4 // - 7*x-1/4
(-2/3)*x-(7*x)-(-1/4)-6 = 0
(-2/3)*x-7*x+1/4-6 = 0
-23/3*x-23/4 = 0 // + 23/4
-23/3*x = 23/4 // : -23/3
x = 23/4/(-23/3)
x = -3/4
x = -3/4
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