Solve the following exercise:
42:22=?
To solve the division of fractions 42:22, follow these steps:
- Step 1: Identify the fractions — the first fraction is 42, and the second fraction is 22.
- Step 2: Find the reciprocal of the second fraction. The reciprocal of 22 is 22, as it simplifies to 1.
- Step 3: Multiply the first fraction by the reciprocal of the second fraction:
42×22=4×22×2=84
Step 4: Simplify the resulting fraction 84. Since the greatest common divisor of 4 and 8 is 4, divide both numerator and denominator by 4:
84=8÷44÷4=21
Therefore, the solution to the problem is 21.