Answer:
y=7x or the answer is 7
Step-by-step explanation:
i took the test in (k12)
8 x
= x
=
x=10
43 and (4x+3) are vertical angles, which mean they are equal
so, 43=(4x+3)
43-3=(4x+3-3)
40=(4x)
40/4=4x/4
10=x