Two times a number plus three equals one half of the number plus 12. What is the number?

Question

Mathematics

Sidney Clayton

22 April, 23:40

Two times a number plus three equals one half of the number plus 12. What is the number?

+4

Answers (2)

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Gloria Molina · Answer 1

We'll use n as "the number". 2n+3=1/2n+12. Step one is to isolate the variable.

2n-1/2n is 1.5n.

1.5n+3=12.

Subtract 3 from both sides.

1.5n=9.

n=6.

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Abbott · Answer 2

First we have to make an equation

2x+3=1/2x+12

then solve

15=-1.5x

-10=x

the number is - 10