Question

Find the value of x.
a. x = 5
b. x = 13
c. x = 37
d. x = 73

Answer 1

1.

Given any triangle with angle measures a, b and c,

the sum of a, b and c is always 180°,

2.

The measures of the angles are (2x+4)°, (2x-9)° and x°,

then

(2x+4)° + (2x-9)° + x°= 180°

2x+4+2x-9+x=180

5x-5=180

5x=185

x=185/5=37

Answer 2

x + 2x +4 + 2x - 9 = 180
5x - 5 = 180
5x = 185
x = 37

answer
c. x = 37