Question

Podem me ajudar??????

Answer 1

13-a) 3/2
b) 8
c) 4/25
d) -16/49

14-a) 1/3+2/3 = 3/3 = 1
b) 1/3.9 = 9/3 = 3
c) (1/7)² .49 = 1/49 .49 = 49/49 = 1
d) 1/36 + 35/36 = 36/36 = 1