Answer:
B.
Explanation:
The options for this question are
A. 7 less than a number
B. A number subtracted from 7
C. A number minus 7
D. The difference between a number and 7
The given expression is
![y-7](https://img.qammunity.org/2019/formulas/mathematics/middle-school/73xj7mnd1kzpxlro77a1i4rt5m2yc5yjm5.png)
As you can observe, the expression two terms which are subtracting. However, it's important to pay attention to the right order of the subtraction. Notice that from a number is being subtracted seven units, so the choice we are looking for has to have the wrong order of the subtraction.
SO, option B has the wrong order of the operation, because states "a number subtracted from 7" which means
which is not the case.
Therefore, the right answer here is B.