Question

How do you write the following as an algebraic expression using x as the variable: Five more than the product of 7 and a number?

Answer 1

Literal word-to-number translation is very easy and fun.

Explanation:

We have to write five more than the product of 7 and an unknown. Let that unknown be x. Since we have to write 5 more than the product of 7 and x, we write
5+7x.

Answer 2

`7x+5`

Explanation:

`"let the number "=x`

`"product of 2 numbers means multiply the numbers"`

`rArr"the product of 7 and x "=7xx x=7x`

`"5 more means add on 5 to the product"`

`rArr7x+5" is the required expression"`

Answer 3

`7x+5`

Explanation:

Five more than ........................`?+5`
the product of .........................`(?xx?)+5`
7 and a number.......................`(7xx x)+5`

Convention requires that this be written as: `7x+5`