32×?=31
To solve this problem, we'll follow these steps:
- Step 1: Identify the equation 32×x=31.
- Step 2: To isolate x, we'll divide both sides by 32.
- Step 3: Perform the division by 32 by multiplying by its reciprocal.
Let's work through each step:
Step 1: We start with the equation 32×x=31.
Step 2: To solve for x, divide both sides by 32:
x=31÷32
Step 3: Dividing by a fraction is equivalent to multiplying by the reciprocal:
x=31×23
Calculate the multiplication:
x=3×21×3=63
x=21
Therefore, the solution to the problem is 21, which corresponds to choice .