Solve the following exercise:
65⋅21−21⋅62=?
To solve the problem, we need to evaluate the expression
65⋅21−21⋅62.
Let's go through this step-by-step:
- Step 1:
Calculate the first multiplication:
65⋅21=6⋅25⋅1=125
- Step 2:
Calculate the second multiplication:
21⋅62=2⋅61⋅2=122
Simplify 122 by dividing the numerator and the denominator by their greatest common divisor, 2:
122=61
- Step 3:
Subtract the second result from the first:
Since we have 125−61, find a common denominator for the fractions, which is 12.
Convert 61 to a denominator of 12:
61=122
Now, perform the subtraction:
125−122=123
Simplify 123 by dividing the numerator and denominator by their greatest common divisor, 3:
123=41
Therefore, the solution to the problem is 41.