Question

calcule: a) 2/5+1/2-1/3
b) 3/4x5/6+1/2
c) 2/3+1/4x3
d) 3/4:1/2-2/3
e) 3/5+1/5:1/10
f) 2 1/2+3/2x1/2

faça os desenvolvimentos

Answer 1

A certa e a c 2/5+1/2-1/3 4