Question

I have tried many times and I just can't get it

Answer 1

1) 60

2) 15

3) 45

4) 105

5) 75

Explanation:

7y + 5y = 180 A straight angle is 180 Combine like terms

12y = 180 Divide both sides by 12

y = 15

The sum of the interior angles is 180

y = 15

180 - (5y + 3y) = x

180 -(5(15) + 3(15)) = x

180 - (75 + 45) = x

180 - 120 = x

60 = x

Angle c

3y

3(15)

45

Angle DBC

7y

7(15)

105

Angle CBA

5y

5(15)

75