Ayudenme a resolverlosp1?
Ayudenme a resolverlos p1. (a + b) + (a - b) = p2. (a + b) + (b - a) = p3. (a - b) + (a + b) = p4. (a - b) - (a + b) = p5 2a - (2a - 3b) - b = p6. 3x + 2y - [x - ( - y)] p7. 2m - 3n - [ - 2m + n - (m - n)] p8. - (a + b - c) - ( - a - b + c) + ( a - b + c) p9. - [ - (a - 2b) - (a + 2b) - ( - a - 3b)].