Question

Two angles are supplementary. The first angle is equal to x, and the second angle is equal to 3x-12. The value of x is equal to

Answer 1

x = 48

Explanation:

Supplementary angles sum to 180°

add the 2 angles and equate to 180

x + 3x - 12 = 180 ( add 12 to both sides )

4x = 192 ( divide both sides by 4 )

x = 48

Answer 2

>> Answer

_________

`\:`

• Triangle = 180

Soo :

x + 3x - 12 = 180

4x - 12 = 180

4x = 180 + 12

4x = 192

x = 192 ÷ 4

x = 48