Math Problem Statement

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Part 1

Perform the indicated operation. Write the sum as a​ fraction, whole​ number, or mixed number in lowest terms.

five sixths56plus+nine fourteenths

Solution

To solve this, we need to add the two fractions: 56+914\frac{5}{6} + \frac{9}{14}.

Step 1: Find the Least Common Denominator (LCD)

The denominators are 6 and 14. The least common denominator is the least common multiple (LCM) of these two numbers.

  • The prime factorization of 6 is 2×32 \times 3.
  • The prime factorization of 14 is 2×72 \times 7.

The LCM is 2×3×7=422 \times 3 \times 7 = 42.

Step 2: Convert the fractions to have the LCD

Now, we convert both fractions to have the denominator 42.

  • For 56\frac{5}{6}, multiply both the numerator and denominator by 7 to get: 56=5×76×7=3542\frac{5}{6} = \frac{5 \times 7}{6 \times 7} = \frac{35}{42}

  • For 914\frac{9}{14}, multiply both the numerator and denominator by 3 to get: 914=9×314×3=2742\frac{9}{14} = \frac{9 \times 3}{14 \times 3} = \frac{27}{42}

Step 3: Add the fractions

Now, add the fractions: 3542+2742=35+2742=6242\frac{35}{42} + \frac{27}{42} = \frac{35 + 27}{42} = \frac{62}{42}

Step 4: Simplify the fraction

Simplify 6242\frac{62}{42} by dividing both the numerator and denominator by their greatest common divisor (GCD), which is 2: 6242=62÷242÷2=3121\frac{62}{42} = \frac{62 \div 2}{42 \div 2} = \frac{31}{21}

Step 5: Write as a mixed number

Since 31÷21=131 \div 21 = 1 remainder 10, we can write it as a mixed number: 3121=11021\frac{31}{21} = 1 \frac{10}{21}

So, 56+914=11021\frac{5}{6} + \frac{9}{14} = 1 \frac{10}{21}.

Let me know if you would like further details or clarifications.

Related Questions:

  1. How do you find the least common denominator of two fractions?
  2. What are the steps to convert an improper fraction to a mixed number?
  3. Can you explain how to simplify a fraction?
  4. What is the prime factorization method used to find the LCM?
  5. How do you convert a mixed number back to an improper fraction?

Tip:

When adding fractions, always check if you can simplify the final answer by dividing the numerator and denominator by their greatest common divisor (GCD).

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Math Problem Analysis

Mathematical Concepts

Fractions
Least Common Denominator
Simplifying Fractions
Mixed Numbers

Formulas

Least Common Denominator (LCD): LCM of denominators
Simplifying Fractions: Divide both numerator and denominator by their greatest common divisor (GCD)

Theorems

Least Common Denominator Theorem: To add or subtract fractions, they must have a common denominator.

Suitable Grade Level

Grades 6-8