Answer:
The answer for first one is,

sorry I don't know the answer for second one.
from the given equation
X+Y=20-->i
X-Y=14--->ii
add eq i and eq ii
2x=34
x=17
putting the value of x=17 in eq i
17+y=20
then y = 3 so the right answer is
17 and 3
For question 1
x^7
for question 2
h^9
Answer:
B. 39
Step-by-step explanation:
3x=117divided by 3=39