Question

Find the value of x from the measurements in the triangle

Answer 1

8

Explanation:

2x + 20 + 5x - 11 = 11x - 63

7x + 9 =11x - 63

72 = 4x

x=18

Answer 2

`\boxed{ \sf{x = 18}}`

Explanation:

As we know that the sum of all interior angles of a triangle and the angle in a straight line is 180°.

Therefore,

• 5x-11+2x+20 = 11x-63
• 5x+2x-11x = -63+11-20
• 7x-11x = -83+11
• -4x = -72
• x = -72/-4
• x = 18