Question

Two times a number, decreased by 12 equals three times the number, decreased by 15. Which is the number?

Answer 1

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Question - Two times a number, decreased by 12 equals three times the number, decreased by 15. Which is the number?

Answer -

Let us denote the number with n. We rewrite the problem as 2n-12=3n-15. We substract 2n from both sides and get -12=n-15. Then we add 15 to both sides in order to get n=3.

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Answer 2

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Step-by-step explanation:12-2x=15-3x

X should always be solved together and constants should be solved together thus,

-2x+3x=15+12

x= 27

Answer is x=27