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2 years ago

When two times a number is decreased by 3 the result is 11 what is the number

Mathematics

2 answers:

sergiy2304 [10]2 years ago

5 0

Hi there!

Let's replace "a number" by "x":

- two times x = 2x

- decreased by 3 = -3

Here's what the equation should look like:

2x - 3 = 11

Now that you have written down your equation, all you have to do now is solve it for "x" by isolating it :

2x - 3 = 11

Add 3 on each side of the equation

2x = 14

Divide each side of the equation by 2

x = 7

Your answer is: The number is 7.

There you go! I really hope this helped, if there's anything just let me know! :)

Paraphin [41]2 years ago

4 0

2x - 3 = 11

Solve:

2x = 14

x = 7

The answer is 7

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