If 8 times a number is decreased by 20,the result is the same as 3 times the number increased by 80

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11-10-2017
Mathematics

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If 8 times a number is decreased by 20,the result is the same as 3 times the number increased by 80

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nathan127 nathan127 · Answer 1 · 2017-10-11T01:06:53+02:00

nathan127 nathan127

11-10-2017

Let the number = x, then you can easily convert the sentence into math/algebra:

If 8 times a number is decreased by 20, the result is the same as 3 times the number increased by 80
8x - 20 = 3x + 80

There, now we can solve for x.
8x - 20 = 3x + 80
5x = 100
x = 20

The number, x, is 20

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