- A
- B
- C
- D
Step-by-Step Solution
Convert everything to twelfths: . Now order the numerators 7 < 8 < 9 < 10. The trap is sorting by numerator alone (2, 3, 5, 7) without converting, which pushes to the end.
Answer: A)
Arrange and in ascending order.
Class 7Fractions and DecimalsFractions and Decimals
Key idea: Adding and subtracting unlike fractions
Step 1: find the **LCM of the denominators**. Step 2: convert each fraction to an equivalent fraction with that LCM as the new denominator. Step 3: now the fractions are 'like' — add or subtract numerators, keep denominator.
Example: 1/3 + 1/4. LCM of 3 and 4 is 12. Convert: 1/3 = 4/12, 1/4 = 3/12. Add: 4/12 + 3/12 = 7/12.
The whole job is converting once you've picked the right common denominator.
Example: 1/3 + 1/4. LCM of 3 and 4 is 12. Convert: 1/3 = 4/12, 1/4 = 3/12. Add: 4/12 + 3/12 = 7/12.
The whole job is converting once you've picked the right common denominator.
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