Answer:
8b estaSIMPLIFIC ADA
Step-by-step explanation:
Answer:

Step-by-step explanation:
We need to find the value of x so that the value of given function becomes 21 .
We have ,

Now , for finding x ,
Step-by-step explanation:
the second one as the -2x-3 is only on the second one
Answer:
C
Step-by-step explanation:
Know that two angles added equals 180