Question

Chelsie saves 1/5 of her allowance and spends 2/3 of her allowance at the mall. What fraction of her allowance remains? Explain.

Answer 1

1-(1/5+2/3)

Get a common denominator

1-(3/15+10/15)

Add the two fractions together

1-(13/15)

Turn the 1 into a fraction

15/15-13/15

Subtract the two fractions

2/15 is how much of her allowance remains

Answer 2

15/15=3/15+10/15+x
2/15=x