Question

1. Write an expression for "n decreased by 3."

Answer 1

Answer:  The required expression is $n-3.$

Step-by-step explanation:  We are given to write an expression for the following statement :

"n decreased by 3."

We know that

if we are decreasing a units from some quantity b, then we should subtract a from b.

This is written as follows :

$E=b-a.$

Therefore, for the given expression, we should subtract 3 from n.

This can be written as :

$E=n-3.$

Thus, the required expression is $n-3.$

Answer 2

Answer:

n-3

Step-by-step explanation: