To find the value of x, we use the fact that the sum of the angles in a triangle is always 180 degrees.
49° + 3x + 74° = 180°
Combine like terms:
(3x) + 123 = 180
Subtract 123 from each side:
3x = 57
Divide by 3:
x = 19
Therefore, x = 19.
The measures of the angles of a triangle are shown in the figure below. Solve for x.
49°
(3x)°
74°
1 answer