Question

Given m∥n, find the value of x

Answer 1

Answer: x=55

Explanation:

Since the lines are parallel, the two angles on the line are supplementary angles.

It means they would add to 180.

1) Set up the equation

(2x+6)+(x+9)=180

2) Combine like terms

3x+15 = 180

3) Move the 15 to the other side to leave x

3x = 180 - 15

3x = 165

4) Set x by itself

x = 165/3

x=55

Answer 2

x=55

Explanation:

2x+6+x+9=180

3x=165

x=55

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