Question

(X+31),(x+20) and x form a a straight line.find them

Answer 1

Answer:

(x+31)+(x+20)=180'

Step-by-step explanation:

x+31+x+20=180

2x+51=180

2x=180-51

2x=129

x=129/2

x=64.5

x+31=64.5+31=95.5

x+20=64.5+20=84.5

Answer 2

Answer:

x + 31 + x + 20 + x = 180°

3x + 51 = 180°

3x = 180 - 51

3x = 129

x = 129

_____

3

x = 43 °

first angle = x +31 = 43 + 31 = 74°

second = x + 20 = 43 + 20 = 63 °

third = x = 43 °

Total angle = 74 ° + 63° + 43° = 180°