Question

5a-{5a-[5a-(5a-m)-m]-m}-m me ajudem pfvvv com contaa

Answer 1

5a-{5a-[5a-(5a-m)-m]-m}-m

5a-{5a-[5a-5a-m-m]-m}-m

5a-{5a-[-2m]-m}-m

5a-{5a+2m-m}-m

5a-{5a+m}-m

5a-5a-m-m

0-2m = - 2m                                                  ok 

Answer 2

5a-{5a-[5a-(5a-m)-m]-m}-m

5a-{5a-[5a-5a-m-m]-m}-m

5a-{5a-[ - 2m]-m}-m

5a-{5a + 2m-m}-m

5a-{5a + m}-m

5a - 5a - m - m  ===> 0 - 2m ==> - 2m