Question

efectectua las sigientes sumas y restas: (2a+3b-5ab)+(5a-4b+2ab)-(7a+b-ab)= , (2ab-5a+3b)-(2a-5b+3ab)-(b-a+ab)

Answer 1

(2a+3b-5ab)+(5a-4b+2ab)-(7a+b-ab)
2a+3b - 5ab + 5a - 4b + 2ab - 7a - b +ab
2a+5a-7a+3b-4b-b-5ab +2ab + ab
7a-7a +3b-5b -5ab + 3ab
-2b-2ab
-2b(1+a)

(2ab-5a+3b)-(2a-5b+3ab)-(b-a+ab)
2ab-5a+3b -2a+5b-3ab -b-a-ab
2ab-3ab -ab-5a-2a-a +3b+5b-b
2ab-8a+7b