Answer:
x = 14
Step-by-step explanation:
The external angle of a triangle is equal to the sum of the 2 opposite interior angles.
7x - 3 is an exterior angle of the triangle, thus
7x - 3 = 4x - 2 + 41
7x - 3 = 4x + 39 ( subtract 4x from both sides )
3x - 3 = 39 ( add 3 to both sides )
3x = 42 ( divide both sides by 3 )
x = 14
