Let's denote the amount of money that Matthew receives as \( x \).
Since Karen receives 150 less than Matthew, we can express the amount Karen receives as:
\[ x - 150 \]
So, the expressions representing the amounts received by Matthew and Karen are:
- Matthew: \( x \)
- Karen: \( x - 150 \)
Thus, if we want to express the total amount of money shared between them, it would be:
\[ x + (x - 150) = 2x - 150 \]
In summary:
- Matthew's share: \( x \)
- Karen's share: \( x - 150 \)
- Total amount shared: \( 2x - 150 \)