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03-11-2016
Mathematics

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20 less than 8 times a number is the same as 15 more than the number

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dasetka dasetka

03-11-2016

20 less than (- 20) 8 times a number (8x) is the same as (=) 15 more than (+ 15) the number (x).

8x - 20 = x + 15

To solve for the number, start by subtracting x from both sides.

7x - 20 = 15 Add 20 to both sides
7x = 35 Divide both sides by 7
x = 5

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