Question

03) Efetus as expressões algébricas
a) (-3) + (+5)-(-7)+(+8)=
b) (+10)-(+4)+(+5)-(-8) =​

Answer 1

→ Cálculo :

A) ( - 3 ) + ( + 5 ) - ( - 7 ) + ( + 8 )

- 3 + 5 + 7 + 8

- 3 + 20

17

B) ( + 10 ) - ( + 4 ) + ( + 5 ) - ( - 8 )

10 - 4 + 5 + 8

6 + 5 + 8

11 + 8

19