Question

Operaciones combinadas ..

Answer 1

a. 3/4-(2/5+((5/5)-(4/6))) //simplificamos
3/4-(2/5+(1-2/3))
3/4-(2/5+(1/3))
3/4-(2/5+1/3)
3/4-(11/15)
(46-44)/60
2/60
1/30

Answer 2

Respuesta:

A=1/30

B =38