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(-4/5)*(x-5) = (-2/3)*(x-5) // - (-2/3)*(x-5)
(-4/5)*(x-5)-((-2/3)*(x-5)) = 0
(-4/5)*(x-5)+(2/3)*(x-5) = 0
2/3*(x-5)-4/5*(x-5) = 0
2/3*(x-5)-4/5*(x-5) = 0
2/3-2/15*x = 0
2/3-2/15*x = 0
2/3-2/15*x = 0 // - 2/3
-2/15*x = -2/3 // : -2/15
x = -2/3/(-2/15)
x = 5
x = 5
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