Answer:
n=4
Step-by-step explanation:
(7+1)+n=(4+7)+1
7+1+n=4+7+1 (subtract 7 from both sides)
1+n=4+1
1+n=5
n=5-1 (Subtract 1 from both sides)
n=4
Answer:
<h2>800</h2>
Step-by-step explanation:

Answer:
(-5, -8)
Step-by-step explanation:
34 + x = 63
x = 63-34
x = 29