Question

in figure 18. 68 lines l and m are Parallel to each other . find the values of X in both figures

Answer 1

Answer:

x+x+40=180(corres. angle)

x+5x=180(by property of alternate angle)

Answer 2

$x + 40 + x = 180 \: \: \: \: \\ 2x = 180 - 40 \\ 2x = 140 \\ x = 70 \\ \\ x + 40 = 7 0 + 40 = 120 \\ x = 70$
$5x + x = 180 \\ 6x = 180 \\ x = 30$