vanedian1931
vanedian1931 vanedian1931
  • 02-02-2021
  • Mathematics
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Half a number decrease by twelve

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dayeabriannaroowld4f
dayeabriannaroowld4f dayeabriannaroowld4f
  • 02-02-2021

Hi!

So, to "half" a number, you multiply it by 1/2 or 0.5

"A number" is a number which we don't know the value of, so we could use a variable. Any letter you want is fine, but let's use x

"Decrease by 12" This simply means to subtract 12, so - 12

So, now we have:

1/2x - 12

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