Question

Proving angle relationships

Answer 1

55°

Explanation:

172 = 12x - 3 + 6x - 5 Combine like terms

172 = 18x - 8 Add 8 to both sides

180 = 18x Divide both sides by 18

10 = x

Substitute 10 for x

6x - 5

6(10) -5

60 - 5

55