Question

54. Find the value of x​

Answer 1

Answer:

x=70°

Step-by-step explanation:

2x+40=180°

2x=180-40

2x=140

x=140÷2

x=70°

Answer 2

Answer:

x=70°

Step-by-step explanation:

x + x + 40° = 180° (sum of angles of triangle)

2x + 40° = 180°

2x = 180-40

2x = 140

x = 140/2

x = 70