ilsehintz
ilsehintz
15-09-2017
Mathematics
contestada
X+8=21 I need helpppp
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JakePaulOhio
JakePaulOhio
15-09-2017
You add 13 and 8 it gets 21 so for X its 13
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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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