Question

For what value of x will the lines l and m be parallel to each other?l=(3x+5) and m=4x

Answer 1

(3x+5)+4x=180

7x+5=180

7x=180-5

x=175/7

x=25

Answer 2

Answer:

Here,

3x+5+4x=180°

=)7x=(180-5)°

=)7x=175°

=)x=175/7

=)x=25°

Hence, the value of x must be 25° for l to parallel m.