Question

1/2 + ( - 5/4 ) + 2/3

Answer 1

1/2+(-5/4)+2/3

1°desembaraçar de parênteses

1/2-5/4+2/3

m.m.c

1. 1/2=6.
2. -5/4=3
3. 2/3=4

6 /12-15/12+8/12

=6/12-23/12

=-17/12.

= 1,41