Answer:
wet by solar..................
1. 33
2. 3x - 3y + 7z
Step-by-step explanation:
combine like terms on the second one.
3x - 3y + 7z
solve for the first one 22 + 18 - 7
18 - 7 = 11
11 + 22 = 33
-1 1/2= 2 lines to the left of -1
1 1/4= 1 line to the right of 1
I hope this helps!