Question

Find the value of x.
3x +7
D
2x + 7
3x 16

Answer 1

Answer:

sum of interior angle of a triangle is 180 degree

so,

3x +7 + 2x+7 +3x+6 = 180

8x + 20 = 180

8x = 180 - 20

8x = 160

x = 160/ 8

x = 20

May it will help you

Answer 2

Answer:

x = 20

Step-by-step explanation:

According to angle sum property of a triangle , sum of all the angles in a triangle is equal to 180°.

So,

$(3x + 7) + (2x + 7) + (3x + 6) = 180$

$= > 8x + 20 = 180$

$= > 8x = 180 - 20 = 160$

$= > x = \frac{160}{8} = 20$