Question

Translate the sentence into an equation.

Twice the difference of a number and equals .
Use the variable for the unknown number.

Answer 1

Question:

Twice the difference of a number and 5 is equal to 9 .

Answer:

`2x - 5 = 9`

Explanation:

Required

Translate

Let the number be x

Twice the number, x is
`2x`

The difference between (above) and 5 is
`2x - 5`

This equals to 9.

So, the expression becomes

`2x - 5 = 9`

Solving further:

`2x = 5 + 9`

`2x = 14`

Divide through by 2

`x = 7`

Hence, the number is 7