Solve: 1/2 + 3/4 + 6/8 Addition of Mixed Denominators

Question

12+34+68= \frac{1}{2}+\frac{3}{4}+\frac{6}{8}=

Video Solution

Solution Steps

00:00 Solution
00:03 We want to find the least common denominator
00:06 Therefore we'll multiply the 4, 2 respectively to find the common denominator
00:09 Remember to multiply both numerator and denominator
00:23 Let's calculate the multiplications
00:30 Add under the common denominator
00:37 Calculate the numerator
00:44 Convert fraction to whole number
00:47 And this is the solution to the question

Step-by-Step Solution

To solve this problem, we will add the fractions 12 \frac{1}{2} , 34 \frac{3}{4} , and 68 \frac{6}{8} by first converting each to have a common denominator:

Step 1: Find the Least Common Denominator (LCD). The denominators are 22, 44, and 88. The LCM of these numbers is 88.

Step 2: Rewrite each fraction with the denominator of 88.

  • 12=1×42×4=48 \frac{1}{2} = \frac{1 \times 4}{2 \times 4} = \frac{4}{8}
  • 34=3×24×2=68 \frac{3}{4} = \frac{3 \times 2}{4 \times 2} = \frac{6}{8}
  • 68 \frac{6}{8} is already expressed with a denominator of 88.

Step 3: Add the fractions:

48+68+68=4+6+68=168 \frac{4}{8} + \frac{6}{8} + \frac{6}{8} = \frac{4 + 6 + 6}{8} = \frac{16}{8}

Step 4: Simplify the fraction:

168=2 \frac{16}{8} = 2

Therefore, the sum of the fractions 12+34+68=2 \frac{1}{2} + \frac{3}{4} + \frac{6}{8} = 2 .

Answer

2 2