Question

The measures of the angles of a triangle are shown in the figure below. Solve for x.43°

(3x+18)°
(6x-16)°

Answer 1

X = 15
(3 x 15 + 18) = 63
(6 x 15 - 16) = 74
74 + 63 + 43=180

Answer 2

3x+18+6x-16+43=180
9x+2+43=180
9x=180-45
9x=135
9x=135
x=135/9
x=15
Good luck