ANSWER:

Let x = the number

The key words are the following:

1) twice means 2 times the number

2) difference means subtract

• 3) sum is adding

With the key words, you could translate them into an equation in which is:

2x - 8 = 3x + 5

The way to solve this equation is to isolate the unknown variable and put the constant on the other side.

2x - 8 - 2x -5 = 3x + 5 - 2x -5

Work out the equation from above to find out what the number is.

Step-by-step explanation:

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