Answer:
16m² + 4m - 6
Step-by-step explanation:
Hello There!
For this one all we need to do is combine like terms
7m²-(-9m²)=16m²
2m-(-2m)=4m
-3-3=-6
so the answer would be
16m² + 4m - 6
2(4 - 2r) = -2(r + 5)
First, divide both sides by -2. / Your problem should look like:
Second, regroup your terms. / Your problem should look like:
Third, add 4 to both sides. / Your problem should look like:
Fourth, add r + 5 + 4 to get r + 9. / Your problem should look like:
Fifth, subtract r from both sides. / Your problem should look like:
Sixth, subtract 2r - r to get r. / Your problem should look like:

Answer:
r = 9
6x+21+15-2x
4x+36
hope this helps...