Answer:
-17
Step-by-step explanation:
-3(1-(-2))•2+3-12÷6 (first parenthesis)
-3(3)•2+3-12÷6 (Multiplication with parenthesis)
-9•2+3-12÷6 (them multiplication and division are on the same level)
-18+3-2 (adding and subtraction are on the same level)
-17
