Answer :

The measure of angle FBE is 14x + 6

How to determine the measure of angle FBE?

The angles are given as:

Angle FBC = 10x-9

Angle CBE = 4x+15

The measure of angle FBE is calculated as:

Angle FBE = Angle FBC + Angle CBE

Substitute the known values in the above equation

Angle FBE = 10x - 9 + 4x + 15

Collect the like terms

Angle FBE = 10x  + 4x - 9 + 15

Evaluate the sum and the difference

Angle FBE = 14x + 6

Hence, the measure of angle FBE is 14x + 6

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