Question

If two supplementary angles are 3x and 4x+5.Find x.​

Answer 1

$\huge \text{Answer:}$

3x+4x+5=180°

7x+5=180°

7x=180°-5

x=175°/7

x=25

Answer 2

Answer:

3x+4x+5 = 180°

7x = 180° -5

7x = 175°

x=175°/7

x = 25