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09-04-2015
Mathematics

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the product of 4 and a number is 18 more than twice the number.

What is the number?

Respuesta :

09-04-2015

Product of 4 and a number = 4x

'is' is an equal sign

18 more than twice the number = 2x + 18

So we have:

4x = 2x + 18

Subtract 2x to both sides:

2x = 18

Divide 2 to both sides:

x = 9

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