Question

Put the rules for subtracting mixed numbers in the correct order.

↑ Check if the fractions have the same denominators. If they do not, find the least common multiple of the denominators, and rewrite each fraction with the same denominator.
↑↓
Write the subtraction problem for the scenario.
Subtract the whole numbers, and subtract the numerator of the fractions, leaving the denominators the same.
Simplify the answer, if necessary. Be sure to write the final answer with the units that the scenario described.
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↓
↑↓

Answer 1

To subtract mixed numbers, check for common denominators, subtract whole numbers, subtract numerators, simplify, and write the answer.

Step-by-step explanation:

Rules for Subtracting Mixed Numbers:

1. Check if the fractions have the same denominators. If they do not, find the least common multiple of the denominators, and rewrite each fraction with the same denominator.
2. Write the subtraction problem for the scenario.
3. Subtract the whole numbers and subtract the numerator of the fractions, leaving the denominators the same.
4. Simplify the answer, if necessary, and write the final answer with the units that the scenario described.

Example:

Subtract 3 1/2 from 5 3/4:

1. Find the least common multiple of 2 and 4, which is 4. Rewrite 3 1/2 as 3/2 and 5 3/4 as 23/4.
2. Write the subtraction problem: 5 3/4 - 3 1/2
3. Subtract: 5 - 3 = 2, and subtract: 3/2 - 23/4 = 6/4 - 23/4 = -17/4.
4. The final answer is -17/4 or -4 1/4.

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