Question #b051e

2 Answers
Jan 30, 2018

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

Jan 30, 2018

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.