ilsehintz ilsehintz
  • 15-09-2017
  • Mathematics
contestada

X+8=21 I need helpppp

Respuesta :

JakePaulOhio
JakePaulOhio JakePaulOhio
  • 15-09-2017
You add 13 and 8 it gets 21 so for X its 13
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qqaisarr
qqaisarr qqaisarr
  • 15-09-2017
X = 13.

Because you want x by itself, to need to remove the +8. So, you must do the opposite to BOTH sides. The opposite of +8 is -8, and 21-8=13. Therefore​, x=13.
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