7 (2x-1)-3 (4x-1) = 4 (3x+2)-1;
(5y+1)+(1-y) = (9y+1)+(1-3y);
[()-4] = x+2;
2(1-20) (320-x) = 320× 40
2 (x-2)+2 = x -2 [9-4 (2-x)] = 22
3/2 [2/3 (1/4x-1)-2]-x = 2 P >
5 3x+5 (138-x) = 540
6 3x-7 (x-1) = 3-2 (x+3) < = 6
10/3 (x/5+3/7) = 9x/2
5/3 (x+0.5)+ P >
6x-(x/3+2) = 2 (x/5+5/2)-3
3 (x/11-2) 9
25 (x/3-x/2+2/5)-2 = 3/5 (x-2/7)+4/9
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