3 years ago

What is the solution to x + 9 = 21? O A. x = 30 B. x = 18 O c. x = 12 O D. x= 9

Mathematics

2 answers:

vlada-n [284]3 years ago

8 0

Answer:

First we need to isolate x. To do this, we have to subtract 9

x = 12!

Step-by-step explanation:

Kaylis [27]3 years ago

4 0

Answer:

x=12

Step-by-step explanation:

x+9-9=21-9

x=12

hope this helps !! 

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