Question

Please help I’m confused

Answer 1

x = 9

The angles: 71, 62, and 47

Explanation:

The total of 3 angles of a triangles equals 180 degrees

so (7x + 8) + (7x - 1) + (5x + 2) = 180

7x + 8 + 7x - 1 + 5x + 2 = 180

19x + 9 = 180

19x = 171

x = 9

so

7x + 8 = 7(9) + 8 = 71

7x - 1 = 7(9) - 1 = 62

5x + 2 = 5(9) + 2 = 47