Question

Two angles are supplementary. They have the measures of

(7x+2) and (3x-2), respectively.
What is the value of x?

Answer 1

Explanation:

since the two angles are supplementary angles they add up to give 180°

therefore, 7x+2+3x-2=180°

or, 10x= 180°

or, x= 18°

Answer 2

x = 18

Explanation:

Two angles (1) and (2) are supplementary Means m∠(1) + m∠(2) = 180

then

(7x+2) + (3x-2) = 180

then

10x = 180

then

x = 18