Salutations!
How should "seven times the sum of a number n and 3" be written as an algebraic expression?
You should read the questions several times to comprehend the expression.
Lets just simply form the expression ----
7n+3
We can add brackets for n+3 to make it more logical.
7 (n+3) is how you will be writing the algebraic expression.
Hope I helped :D
