Solve the Fraction Equation: (3/4 × 1/2) - 1/4

Question

Solve the following exercise:

341214=? \frac{3}{4}\cdot\frac{1}{2}-\frac{1}{4}=\text{?}

Video Solution

Solution Steps

00:07 Let's solve this problem together.
00:10 Always do multiplication and division first, before addition and subtraction.
00:16 Multiply the top numbers together, then multiply the bottom numbers together.
00:21 Now, let's calculate these products.
00:24 Next, multiply the fraction by two to get the same bottom number, or denominator.
00:30 And don't forget, multiply both the top and bottom.
00:34 Great! Let's calculate these products now.
00:38 Subtract using the shared bottom number, the common denominator.
00:44 And that's how we solve this problem!

Step-by-Step Solution

To solve the problem 341214 \frac{3}{4} \cdot \frac{1}{2} - \frac{1}{4} , follow these steps:

  • Step 1: Perform the multiplication operation:
    Calculate 3412 \frac{3}{4} \cdot \frac{1}{2} :
    Multiply the numerators: 3×1=3 3 \times 1 = 3 .
    Multiply the denominators: 4×2=8 4 \times 2 = 8 .
    Thus, 3412=38 \frac{3}{4} \cdot \frac{1}{2} = \frac{3}{8} .
  • Step 2: Perform the subtraction operation:
    Now, subtract 14 \frac{1}{4} from 38 \frac{3}{8} .
    Before subtracting, we need a common denominator. The least common denominator of 8 8 and 4 4 is 8 8 .
    Convert 14 \frac{1}{4} to have a denominator of 8 8 :
    14=1×24×2=28 \frac{1}{4} = \frac{1 \times 2}{4 \times 2} = \frac{2}{8} .
    Now, subtract the fractions:
    3828=328=18 \frac{3}{8} - \frac{2}{8} = \frac{3 - 2}{8} = \frac{1}{8} .

Therefore, the solution to the problem is 18 \frac{1}{8} .

Answer

18 \frac{1}{8}