Question

Efectuá

a.) 3/7 + -5/4 c.)2/3 - (1/2 - 1/3)

b.) 3/20 - 5/12 d.)2- (-1/3) + 2/5

Answer 1

A. (12-35)28=-23/28

b. (9-25)/60=-16/60=-4/15

c. 2/3-(3-2/6)
2/3-(1/6)=(4-1)/6=3/6=1/2

d.2+1/3+2/5
(30+5+6)/15 =41/15