Lizzy190
Lizzy190 Lizzy190
  • 02-09-2017
  • Mathematics
contestada

Can someone please help
calculate the given expressions
199 - 199
-67 - -67
21 + -21
do i add and subtract normally

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halo9274
halo9274 halo9274
  • 02-09-2017
199-199=0
-67 - -67= 0
21 + -21= 0

I'm thinking that's how it goes.
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torresoctavio0ovb4st torresoctavio0ovb4st
  • 02-09-2017
yep, subtracting a negative is like adding. and the others are normal, adding a negative is like subtracting.
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