Solve the Fraction Addition: 1/7 + 1/8 Step-by-Step

Question

17+18= \frac{1}{7}+\frac{1}{8}=

Video Solution

Solution Steps

00:00 Solve
00:03 We want to find the least common denominator
00:06 Multiply each fraction by the other denominator to find the common denominator
00:09 Remember to multiply both numerator and denominator
00:18 Calculate the multiplications
00:26 Add under the common denominator
00:34 Calculate the numerator
00:37 And this is the solution to the question

Step-by-Step Solution

To solve this problem, we'll follow these steps:

  • Step 1: Identify the common denominator.
  • Step 2: Convert each fraction to have this common denominator.
  • Step 3: Add the converted fractions.
  • Step 4: Simplify the result.

Now, let's work through each step:
Step 1: The denominators are 7 and 8. Their product is 7×8=56 7 \times 8 = 56 . So, the common denominator is 56.
Step 2: Convert 17\frac{1}{7} to have a denominator of 56 by multiplying numerator and denominator by 8: 1×87×8=856\frac{1 \times 8}{7 \times 8} = \frac{8}{56}.
Convert 18\frac{1}{8} to have a denominator of 56 by multiplying numerator and denominator by 7: 1×78×7=756\frac{1 \times 7}{8 \times 7} = \frac{7}{56}.
Step 3: Add these equivalent fractions: 856+756=8+756=1556\frac{8}{56} + \frac{7}{56} = \frac{8 + 7}{56} = \frac{15}{56}.
Step 4: The fraction 1556\frac{15}{56} is already in its simplest form.
Therefore, the solution to the problem is 1556 \frac{15}{56} .

Answer

1556 \frac{15}{56}