For this case we have the following expression:
We observe that the numerator in both fractions is smaller than the denominator.
Therefore, we are in the presence of two proper fractions.
Since the denominator of both fractions is equal, then the result is given by:
The numerators are added and the denominator is the same.
The result is also a proper fraction because the numerator is smaller than the denominator.
Answer:
A ................................
They are going to be supplementary angles so together they will add up to be 180°. So F will be 43° and B will be 137°.
The measures of the other angles is 45°
90+2x=180
2x=90
x=45