Question

{[(3-4+7)-(9-6)]+(-20+9)}-10

Answer 1

{[(3-4+7)-(9-6)]+(-20+9)}-10=

{[6-3]+(-20+9)}-10=

{3+(-11)}-10=

-8-10= -18

Answer 2

Respuesta:

{[(3-4+7)-(9-6)]+(-20+9)}-10

{[(6)-(3)]+(-11)}-10

{3+(-11)}-10

{-8}-10

-18

Explicación paso a paso: