Question

Find the value of x that will make A||B

Answer 1

x=12

Explanation:

Because the angles labeled 5x and 4x+12 ate opposite exterior angles, they are congruent. This means that we can set up the following equation:

5x=4x+12

Subtracting 4x from both sides, we have:

X=12

Answer 2

x = 12

Explanation:

When two parallel lines are intersected by a transversal, the alternate exterior angles are congruent.

5x = 4x + 12

Subtract 4x from both sides,

5x - 4x = 4x - 4x + 12

x = 12