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3 years ago

-7=21+x help please thankyou

Mathematics

2 answers:

serg [7]3 years ago

4 0

Move the 21 to the other side and change the sign

-7-21=x
x=-28

hope this helps

Readme [11.4K]3 years ago

4 0

Subtract 21 on both sides.

-7-21=21-21+x
-7-21=x
x=-28

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