Answer:
-19
37
Step-by-step explanation:
For the first problem, plug in -3 wherever you see the variable 's'.
9*(-3) - 7 - 5*(-3)
= -27 - 7 - (-15)
= -34 + 15 (two negatives together make a positive)
= -19
Similarly, for the second problem, plug in 4 wherever you see an 'n'.
7 - (4÷2) + (8*4)
=7 - 2 + 32
=37
