Given facts:
Owen painted 4/15 of the wall, and Olan painted 8/15 of the wall.
Problem asked:
How much of the wall is painted?
Operation used:
Becuase Owen and Olan painted the same wall,
addition will be used to find out how much of the wall is painted.
Number sentence:
A number sentence is an equation that is expressed with numbers and operative symbols. The following equation is your number sentence:

Answer:
Both fractions have the same denominator, so you can add the numerators together:

We can simplify this answer by finding the greatest common factor (GCF) of the numerator and denominator.
Factors of 12: {1,2,
3,4,6,12}
Factors of 15: {1,
3,5,15}
Divide the numerator and denominator by the GCF:
4/5 of the wall is painted.