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(5/7)*(14*x-21)+32 = 15*((2/3)*x-1)+13*x // - 15*((2/3)*x-1)+13*x
(5/7)*(14*x-21)-(15*((2/3)*x-1))-(13*x)+32 = 0
(5/7)*(14*x-21)-15*((2/3)*x-1)-13*x+32 = 0
5/7*(14*x-21)-15*(2/3*x-1)-13*x+32 = 0
5/7*(14*x-21)-15*(2/3*x-1)-13*x+32 = 0
32-13*x = 0
32-13*x = 0
32-13*x = 0 // - 32
-13*x = -32 // : -13
x = -32/(-13)
x = 32/13
x = 32/13
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