Question

Fill in the missing numbers
{6 1} - {9 6} = ______. ______
{2. 1}. {7. 3} -5. _______

Answer 1

To fill in the missing numbers, let's look at the calculations step by step.

For the first expression:
\[
{6 1} - {9 6}
\]

We can break this down into two parts. Let's denote the two numbers in each set clearly:

- First set: \(6\) (first element) and \(1\) (second element)
- Second set: \(9\) (first element) and \(6\) (second element)

Now we can perform the subtraction of each corresponding element:

For the first column: \(6 - 9 = -3\)

For the second column: \(1 - 6 = -5\)

So the first missing number is \(-3\) and the second is \(-5\).

Now putting this together:
\[
{6 1} - {9 6} = {-3 -5}
\]

For the second expression:
\[
{2 1} - {7 3} = ______ -5 ______
\]

Similar to the first step, let's denote the elements clearly:

- First set: \(2\) (first element) and \(1\) (second element)
- Second set: \(7\) (first element) and \(3\) (second element)

Performing the calculations again:

For the first column: \(2 - 7 = -5\)

For the second column: \(1 - 3 = -2\)

Thus, the second expression simplifies to:
\[
{2 1} - {7 3} = {-5 -2}
\]

Summarizing both answers:

For the first expression:
\[
{6 1} - {9 6} = {-3 -5}
\]

For the second expression:
\[
{2 1} - {7 3} = {-5 -2}
\]

So the completed responses are:
\[
{6 1} - {9 6} = {-3 -5}
\]
\[
{2 1} - {7 3} = {-5 -2}
\]