Try another version of these questions
Use the rule for order of operations to simplify the expression as much as possible:
`-8+4(-5+7) =` 0
Use the rule for order of operations to simplify the expression as much as possible:
`9(-6+9) + 2(-2+10) =` 43
Use the rule for order of operations to simplify the expression as much as possible:
`3+(-2)-:1+2(7) =` 15