Multiply the term in parentheses by its coefficient:



Combine like terms:

Add 20 to both sides:

Divide both sides by -8 to get n by itself:

The value of n is
1.
Answer:
1 is a increase
2 is decrease
Step-by-step explanation:
Answer:
7a
Step-by-step explanation:
1-8/9=1/9 of students do not have cell phone,
we can express this fraction as %
1/9*100%=11.11%≈ 11%