A number decreased by 3 gives twice the number

Question

Solve the number problem by finding the value of the unknown number

Answer 1

We don't know the number, so we'll just label it x. "A number decreased by 3". This is written mathematically as x-3

 

"Twice the number" Translation to math? 2x

 

"Gives" is just like "equal" or "is equal to". Since those two expressions are the same, set them equal to each other and solve for x.