Question

Question #b051e

Answer 1

`2x+4*3=72`
`x=30`

Explanation:

I am going to say that this is the equation. The sum means to add. It is asking you to add twice a number. You don't know what the number is, so you are going to do `2x` Then it says and 4. Remember you were suppose to add. So you will add `4` to `2x`. This is then tripled, so you would multiply it by `3`. The result is then `72`.

Multiply `4*3` which will equal `12`. Then subtract 12 from each side. `2x+12-12=72-12` This will leave you with `2x=60`. Then divide both sides by `2`. This will leave you with your answer of x=30

Answer 2

The phrase "twice a number" tells us to write:

`2x`

The phrase "the sum of twice a number and 4" tells us to add 4:

`2x+4`

Then it tells us that the whole thing is tripled:

`3(2x+4)`

The phrase "the result is 72" tell us that whole thing equals 72:

`3(2x+4)=72`

I hope that this helps.