Use the rule for order of operations to simplify the expression as much as possible:

`-6+5(-4+6) =`

Use the rule for order of operations to simplify the expression as much as possible:

`5(-5+8) + 2(-3+10) =`

Use the rule for order of operations to simplify the expression as much as possible:

`-2+18-:(-6)+3(9) =`