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(-2/3)*x+7/3 = (-2/5)*x-4 // - (-2/5)*x-4
(-2/3)*x-((-2/5)*x)+7/3+4 = 0
(-2/3)*x+(2/5)*x+7/3+4 = 0
19/3-4/15*x = 0 // - 19/3
-4/15*x = -19/3 // : -4/15
x = -19/3/(-4/15)
x = 95/4
x = 95/4
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