The correct option is B 73
Let's convert 213 to an improper fraction as follows,
Step 1: Multiply the denominator "3"(the bottom number in the fraction) and the whole number "2"
2×3=6
Step 2: Add the answer from Step 1 to the numerator "1"(the top number in the fraction)
6+1=7
Step 3: Write answer from Step 2 over the denominator "3"
73
∴ Option "b" is the correct answer