Question

como resolver mim ajudem pfv???

Answer 1

1) -3 - 2/5 = -15 - 2 / 5 = - 17/5

2) +2/9 - 1/1 = 2 - 9/9 = - 11/9

3) - 7/2 + 2/1 = -7 + 4 /2 = -3/2

4) -3/10 + 2/5 = -3+4/10 = 1/10

5) -2/3 - 2/10 (simplif.) 1/5= -10 -3/15 = - 13/15