Solve Mixed Number Addition: 2½ + 3⅐ Step-by-Step

212+317= 2\frac{1}{2}+3\frac{1}{7}=

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:00 Solve
00:04 First convert mixed numbers to fractions
00:45 Multiply each fraction by the second denominator to find the common denominator
00:53 Calculate the multiplications
01:05 Add with the common denominator
01:17 Now convert to mixed number
01:24 Break down 79 into 70 plus 9
01:35 Break down the fraction into whole number and remainder
01:42 Convert whole fraction to whole number, and combine with mixed number
01:48 And this is the solution to the question

Step-by-step written solution

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1

Understand the problem

212+317= 2\frac{1}{2}+3\frac{1}{7}=

2

Step-by-step solution

To solve the addition of 212+3172\frac{1}{2} + 3\frac{1}{7}, we will follow these steps:

  • Convert each mixed number to an improper fraction.
  • Find a common denominator for the fractions.
  • Add the fractions together.
  • Convert the resulting improper fraction back to a mixed number.

Now, let's perform the calculations:
Step 1: Convert to improper fractions.
2122\frac{1}{2} becomes 52\frac{5}{2} because (2×2)+1=5(2 \times 2) + 1 = 5.
3173\frac{1}{7} becomes 227\frac{22}{7} because (3×7)+1=22(3 \times 7) + 1 = 22.

Step 2: Find a common denominator.
The least common denominator of 2 and 7 is 14. We convert 52\frac{5}{2} and 227\frac{22}{7} to have this common denominator:
52=3514\frac{5}{2} = \frac{35}{14} (because 5×7=355 \times 7 = 35)
227=4414\frac{22}{7} = \frac{44}{14} (because 22×2=4422 \times 2 = 44)

Step 3: Add the resulting fractions.
3514+4414=7914\frac{35}{14} + \frac{44}{14} = \frac{79}{14}

Step 4: Convert the improper fraction back to a mixed number.
7914\frac{79}{14} can be expressed as 59145\frac{9}{14} because 79 divided by 14 is 5 with a remainder of 9.

Therefore, the solution to the problem is 59145\frac{9}{14}.

3

Final Answer

5914 5\frac{9}{14}

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\( 5:\frac{2}{5}= \)

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