A number decreased by 12 is 24.

Mathematics

2 answers:

igomit [66]3 years ago

7 0

A number decreased by 12 is 24...
n - 12 = 24
n = 24 + 12
n = 36 <== ur number

Galina-37 [17]3 years ago

3 0

A number decreased by 12 is 24.
(by looking at your question, we can see that 'decreased by 12' = subtract (-) 12)

We can write this as the equation n - 12 = 24, in which n = the number.

Now let's solve for n by using algebraic properties.

n - 12 = 24
n - 12 + 12 = 24 + 12 (add 12 to both sides to isolate n)
n = 24 + 12 (the -12 and +12 cancel to 0 on the left side)
n = 36 (simplify, add 24 and 12)

Therefore the number is 36.

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