Multiply Mixed Numbers: 1 4/12 × 1 4/14 Step-by-Step

Question

1412×1414= 1\frac{4}{12}\times1\frac{4}{14}=

Video Solution

Step-by-Step Solution

Let's solve the problem by following these steps:

  • Step 1: Convert the mixed numbers to improper fractions.
  • Step 2: Multiply the improper fractions.
  • Step 3: Simplify the resulting fraction and convert back to a mixed number if needed.

Step 1:
Convert 14121\frac{4}{12} to an improper fraction.

Calculate the improper fraction: 1412=1×12+412=1612 1\frac{4}{12} = \frac{1 \times 12 + 4}{12} = \frac{16}{12}

Convert 14141\frac{4}{14} to an improper fraction.

Calculate the improper fraction: 1414=1×14+414=1814 1\frac{4}{14} = \frac{1 \times 14 + 4}{14} = \frac{18}{14}

Step 2:
Multiply the two improper fractions:

1612×1814=16×1812×14 \frac{16}{12} \times \frac{18}{14} = \frac{16 \times 18}{12 \times 14}

Simplify the multiplication:

  • Numerator: 16×18=28816 \times 18 = 288
  • Denominator: 12×14=16812 \times 14 = 168

The resulting fraction is 288168\frac{288}{168}.

Step 3:
Simplify 288168\frac{288}{168}.

Find the greatest common divisor (GCD) of 288 and 168, which is 24.

  • Divide numerator by GCD: 288÷24=12288 \div 24 = 12
  • Divide denominator by GCD: 168÷24=7168 \div 24 = 7

The simplified fraction is 127\frac{12}{7}.

Convert 127\frac{12}{7} back to a mixed number:

12 divided by 7 is 1 with a remainder of 5, so the mixed number is 1571\frac{5}{7}.

Thus, the solution to the problem is 157\boxed{1\frac{5}{7}}.

Answer

157 1\frac{5}{7}