Because Line 1 is parallel to Line 2, angle "a" should also be 46 degrees. b is complementary so it would be 180-46=134(degrees).
Answer:
Hello your handwriting is bad I don't understand
It says to simplify so number 3 would be 12

Number 4 is

Number 5 is
5.6-4.9=x
.7= x is the answer not .8
Wait when x= 2 or -4? is the second part options or 5(x-2)/(x-2)(x+4)