4n+7−(7n−8)
=4n+7+−1(7n−8)
=4n+7+−1(7n)+(−1)(−8)
=4n+7+−7n+8
Combine Like Terms
=4n+7+−7n+8
=(4n+−7n)+(7+8)
=−3n+15
There is no picture or anything but it’s ok .
Answer:
4
Step-by-step
dam its so simple it hurts my brain
ANSWER

EXPLANATION
The given expression is;

Change everything to

and

This implies that,

Cancel the common factors,





