Question

8. Find the value of x so that line mis parallel to line l. (1 p

(3x+21)°

(4x-7)

Answer 1

Answer: The value of x is 28.

Explanation:

Since line m is parallel to line l.

So, we assume that

(3x+21)° and (4x-7)° are corresponding angles.

And we know that , corresponding angles formed when a transversal cut the parallel line are equal.

So, they must be equal to each other.

`3x+21=4x-7\\\\21+7=4x-3x\\\\28^\circ=x`

Hence, the value of x is 28.