Question

Find the value of x in the figure?

Answer 1

x = 11

Explanation:

The sum of the angles of a triangle is 180 degrees

60 + 80 + 3x+7 = 180

Combine like terms

3x+147=180

Subtract 147 from each side

3x+147-147=180-147

3x = 33

Divide each side by 3

3x/3 = 33/3

x = 11

Answer 2

x = 11

Explanation:

the sum of the 3 angles in the triangle = 180°

sum the 3 angles and equate to 180

80 + 60 + 3x + 7 = 180

147 + 3x = 180 ( subtract 147 from both sides )

3x = 33 ( divide both sides by 3 )

x = 11