Questions on Algebra: Expressions involving variables, substitution answered by real tutors!

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Question 153397: do you know the answer to y+(-3)=12 and can you show me how you got the answer: do you know the answer to y+(-3)=12 and can you show me how you got the answer
Answer by Fombitz(1756) About Me  (Show Source):
You can put this solution on YOUR website!
y+(-3)=12
Add 3 to both sides of the equation.
y+cross((-3))+cross(3)=12+3
y=15