19. Solve: 2x-1- 2x- 2 3x+ 1 X+1 5 4 2x-1-2x-2(1) 2. 2x-1-20x-20 3x+1(4) 5. 12x+4 t. 20 20 420. Solve: 조3+ -x= 452+5 (2) X+3 X-3 4х-2 -X%D= 6

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