Question

Use the marked parallel lines to find the value of y in the diagram below.

Answer 1

The answer choices are

19
50
55
18

But I keep getting the answer 22, so can anyone help me?

Answer 2

You start with the equations: 2x+5 = 3x - 45 and 4y - 1 + 2x + 5 = 180
Start by solving the left equation for x

Answer 3

3x - 45 = 2x + 5
x = 50

Answer 4

Plug in x = 50 in to the right equation to get:
4y - 1 + 2(50) + 5 = 180
4y - 1 + 100 + 5 = 180
4y + 104 = 180
4y = 76
y = 19

Answer 5

Getting the same answer as jziggy.

Answer 6

Oh, I see what I did wrong now. Thank you guys! :)