3 years ago

Solve. X-9 = 12 .....

Mathematics

2 answers:

Lelechka [254]3 years ago

5 0

Answer:

x=21

Step-by-step explanation:

x=9+12 x=21

kumpel [21]3 years ago

3 0

Answer:

Step-by-step explanation:

X-9=12

Reverse the operation into

9+12=x

9+12=21

Now check

21-9=12

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