what is the expression for "the difference between 5 times a number and twice that number"?

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03-04-2018
Mathematics

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what is the expression for "the difference between 5 times a number and twice that number"?

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penfila11Pen penfila11Pen · Answer 1 · 2018-04-03T18:56:13+02:00

penfila11Pen penfila11Pen

03-04-2018

Hey there :)

Before translating the sentence into mathematics, let r represent 'a number'

5 times a number = 5r
2 times that number = 2r

The difference between them = 5r - 2r

* Your equation
5r - 2r

* Solving the equation
= 5r - 2r
= 3r

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