Question

Does anyone know these 2?

Answer 1

Since the lines are parallel 5x + 15 is the same as angle 1 and 5x + 15 + 3x - 3 equal 180°

`5x + 15 + 3x - 3 = 180`

combine like terms like x's and constants like -3 and 15

`8x + 12 = 180`

subtract 12 from 180 to get 168

`8x = 168`

divide by 8

`x = 21`

Answer 2

1. x=21
2. <1=120 these are the answers