Answer:
Last option 30°
damm sure about it
Step-by-step explanation:
value of x is 23 but value of Angle ABC will be x +7 i.e. 30
30
∠ABC + ∠CBD = 90°
x + 7 + 2x + 14 = 90°
x + 2x + 7 + 14 = 90
3x + 21 = 90
Subtract 21 from both sides
3x = 90 - 21
3x = 69
Divide both sides by 3
x = 69/3
x = 23
∠ABC = x + 7
= 23 + 7
= 30
