2124×142=
To solve the given problem, we'll follow these steps:
- Convert the mixed numbers to improper fractions.
- Multiply the improper fractions.
- Simplify the result and convert back to a mixed number if necessary.
Let's work through these steps:
1. Convert each mixed number to an improper fraction:
- For 2124, first simplify the fraction 124 to 31. So, 231 becomes:
32×3+1=37.
- For 142, first simplify the fraction 42 to 21. So, 121 becomes:
21×2+1=23.
2. Multiply the improper fractions:
The multiplication of 37 and 23 is:
37×23=621.
3. Simplify the resulting fraction 621:
621=27 after dividing the numerator and denominator by 3.
4. Convert the improper fraction back to a mixed number:
27=321.
Thus, the solution to the problem is 321.