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-10/4 + 5 = 2/3x - 1/4x
(-10+20)/4 = (8x-3x)/12
10/4 = 5x/12
10 x 12 = (5x ) x 4
120 = 20x
6 = x
1/4x - 10/4 = 2/3x-5
1/4x-2/3x = -5+10/4
3/12x-8/12x = -5+2,5
-5/12x = -2,5
-5x =12×-2,5
-5x =-30
5x =30
x =6