Question

Help please
solve for x​

Answer 1

x = 19

Explanation:

The 3 angles form a straight line and sum to 180°, that is

5x + 4 + x - 2 + 3x + 7 = 180

9x + 9 = 180 ( subtract 9 from both sides )

9x = 171 ( divide both sides by 9 )

x = 19