Answer:
12
Step-by-step explanation:
Order of operations is known as BEDMAS, PEDMAS, PEMDAS or some other variants but they are all essentially the same.
The first step we must complete is anything in brackets or parenthesis.
2(3-1)-4(-1-1) = 2(2)-4(-2)
Second step is exponents, but there are no exponents in this question so we skip this step.
Third step is multiplication and/or division.
2(2)-4(-2) = 4 + 8
The final step is addition and/or subtraction.
4 + 8 = 12
