Question

Translate the sentence into an equation.

Five times the sum of a number and 3 equals 7.
Use the variable x for the unknown number.

Answer 1

(5x) + 3 = 7

Explanation:

Times means 'The answer when you multiply' So we are working in multiplication. ( x )

5x is the multiplication.

It says 'and' which can also mean addition. So we add 3. So far our equation is: (5x) + 3 (Brackets are needed as we are multiplying 5 by x and not multiplying 5 by x+3)

Lastly it says the answer must be 7 so we add that at the end. So the answer is:

(5x) + 3 = 7