Question

I don’t get it , can somebody help me please don’t give me the wrong answer

Answer 1

D) 132

Explanation:

y + 3x = 180 {Co interior angles}

y = 180 - 3x ------------(I)

7x + 20 = y {Vertically opposite angles}

7x + 20 = 180 - 3x {From equation (I)}

7x + 3x +20 = 180

10x + 20 = 180

10x = 180 -20

10x = 160

x = 160/10

x = 16

Plug in x = 16 in equation (I)

y = 180 - 3x

= 180 - 3*16

= 180 - 48

y = 132