Answer: 7*N - 12
Step-by-step explanation:
Let's break this so is easier to interpret.
"12 less than a number"
if we call the number as N, this is written as:
N - 12
and the complete sentence is:
"12 less than a number times 7"
So we must multiply our number, N, by 7.
Then the expression is:
7*N - 12
