Answer:
x=30, A=132
Step-by-step explanation:
These 2 angels are alternate interior angles so they are equal
5x-18=3x+42
Solve.
2x=60
x=30
Now substitute x into angle A
A=150-18
A=132
Answer:
B.
Step-by-step explanation:
First, notice that we can cancel out an x in the second term. Thus:

As with the last question, change the sign to multiplication and "flip" the second term:

Multiply straight across:

Cancel the (x+1) term:

Cannot be simplified further.
B.