Question

Eliminar los signos de agrupación y resolver:

a) (-24) –(-35) +(32) =
b) ( 42) –(-72) - (-)=
c)-(12- 23) +[ - + (-31 – 5) + 8 – (-11 +14) ] + 18 =

Answer 1

a) (-24)-(-35)+(32)=

-24+35+32=43

b) (42)-(-72)-(-)=

42+72+=114

c) -(12-23)+(-+(-31-5)+8-(-11+14))+18=

-(-11)+(-(-36)+8-(3))+18=

11+(36+8-3)+18=

11+(41)+18=

11+41+18=70

Recuerda:

+ - = -

+ + = +

- - = +