Add and subtract mixed numbers with unlike denominators

**ADDING OR SUBTRACTING MIXED NUMBERS WITH UNLIKE DENOMINATORS.**

Step 1. |
Write equivalent fractions with the lowest common denominator. |

Step 2. |
Add or subtract the numerators of the fractions. |

Step 3. |
Add or subtract the whole numbers. |

Step 4. |
Simplify |

Add

The lowest common denominator is 15. Write equivalent fractions with the lowest common denominator, add the numerators of the fraction, add the whole numbers and simplify.

Add 4

Simplify your answer and write it as a proper fraction or as a whole or mixed number.