Respuesta :

Annxiannnallev

Answer:

X=13

Step-by-step explanation:

thezekromninja

Answer:

x=13

Step-by-step explanation:

21=8+x

Swap sides so that all variable terms are on the left hand side.

8+x=21

Subtract 8 from both sides.

x=21−8

Subtract 8 from 21 to get 13.

x=13

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