Answer:
29
Step-by-step explanation:
25+4
you take the final amount and add what was taken to find the initial value
No
1/2 times 1/2 = 1/4
2(x+7)
i hope this helps
1. 33
2. 3x - 3y + 7z
combine like terms on the second one.
3x - 3y + 7z
solve for the first one 22 + 18 - 7
18 - 7 = 11
11 + 22 = 33
