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(4/3)*x+10 = (-5/3)*x-8 // - (-5/3)*x-8
(4/3)*x-((-5/3)*x)+8+10 = 0
(4/3)*x+(5/3)*x+8+10 = 0
3*x+18 = 0 // - 18
3*x = -18 // : 3
x = -18/3
x = -6
x = -6
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