Question

Me ajuda alguém pfvr

Answer 1

a. 1/3 + (-1/5) = 5/15 - 3/15 = 2/15

b. 2×7 - (-1/2) = 14 + 1/2 = 29/2

c. (1/2)^2 - 1/3 × 1/4
1/4 - 1/12
3/12 - 1/12
2/12