Sagot :
[tex]1.) \\ -10+6+(-2)+(-2) \\ -10+6-2-2 \\ -4-2-2 \\ -6-2 \\ \boxed{-8} \\ \\ 2.) \\ 18+(-8)+3+(-3) \\ 18-8+3-3 \\ 10+3-3 \\ 13-3 \\ \boxed{10} \\ \\ 3.) \\ -12+(-15)+6+5 \\ -12-15+6+5 \\ -27+6+5 \\ -21+5 \\ \boxed{-16} \\ \\ Hope\ it\ Helps :) \\ Domini[/tex]