SOLUTION: The sum of a number and -7 is -12. solve and check

SOLUTION: The sum of a number and -7 is -12. solve and check

Algebra.Com

Question 117911: The sum of a number and -7 is -12.
solve and check
Answer by MathLover1(20849) (Show Source): You can put this solution on YOUR website!

The sum of a number and is we can write like this:

.....add to the both sides

check:
....substitute

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