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5 5 5 5
2. 6 - 5 = 6 - 5 = 1
7a 7a 7a 7a
3. 2x + x = 2x(4) + x(3) =8x + 3x = 11x
3 4 12 12 12
4. 3 + 3 = 3(9) + 3(x) = 27 + 3x
x 9 x (9) 9x
5. x + x-4 = x(3) + (x-4).(2) = 3x + 2x- 8 = 5x
2 3 6 6 6
6. 3x - 2 - x + 4 = (3x - 2 (3)) - (x +4 (6)) = 9x - 6 - 6x - 24 = 3x - 30
6 3 18 18 18
8. 4 + 4 = 4 + 8 = 12 = 3
4 2 4 4
10. 4 - 3 = 4 (x-2) - 3(x+3) = 4x-8 -3x - 9 = x - 17
x +3 x-2 (x+3) (x-2) x² + x -6 x²+ x -6
2. -1/7a
3. 5x/12
4. 26+3x/9x
5. 6x-12/6