Answer
-47
Work Step by Step
Because multiplication is before addition in order of operations, we first multiply and then we add.
We see that we are multiplying a positive number by a negative number in this problem. Recall, when we multiply a positive by a negative, the answer will always be a negative. Thus, we obtain:
$3 \times -4 + 5 \times (-7) = -12+(-35)=-47$
