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-x-4 = (3/4)*(x-6) // - (3/4)*(x-6)
-((3/4)*(x-6))-x-4 = 0
(-3/4)*(x-6)-x-4 = 0
-3/4*(x-6)-x-4 = 0
-3/4*(x-6)-x-4 = 0
9/2-7/4*x-4 = 0
1/2-7/4*x = 0
1/2-7/4*x = 0
1/2-7/4*x = 0 // - 1/2
-7/4*x = -1/2 // : -7/4
x = -1/2/(-7/4)
x = 2/7
x = 2/7
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