Question

The angles shown below are supplementary:

what is the value of x

Answer 1

Answer:

$x=12$

Step-by-step explanation:

By definition, supplementary angles add up to 180 degrees. Therefore, we can set up the follow equation to solve for $x$:

$10x+60=180,\\10x=120,\\x=\boxed{12}$

Answer 2

Answer:

x=12

Step-by-step explanation:

Supplementary angles add up to 180 degrees.

10x+60=180

Subtract 60 from both sides:

10x=120

Divide 10 to both sides:

x=12