Question

10
What is the value of x?
O 12
O 25
O 38
52
56:41

Answer 1

x = 25

Option 2

Explanation:

The angles ∠ACE and ∠ECB are adjacent linear angles lying on the same straight line AB

Therefore they constitute a pair of supplementary angles

Supplementary angles add up to 180°

m∠AC + m∠ECB = 180

→ (2x + 2) + (5x + 3) = 180

→2x + 5x + 2 + 3 = 180

→7x + 5 = 180

→ 7x = 180 - 5
= 175

x = 175/7
x = 25