Eahorton0109
Eahorton0109 Eahorton0109
  • 20-01-2015
  • Mathematics
contestada

18=20+x I need to know what x= but wouldn't it be subtraction

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logo88
logo88 logo88
  • 20-01-2015
18=20+x
-20 -20
x= 18-20
x= -2

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AL2006
AL2006 AL2006
  • 20-01-2015

Please !  Don't make something hard out of something easy. 
It makes math look bad.

Simply take the original equation               18 = 20 + x

You want 'x' all alone on one side of the
equation, so subtract 20 from each side:    -2 = x


Answer Link

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