(120+y)-y=120

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Solution for (120+y)-y=120 equation: 



(120+y)-y=120

We move all terms to the left:

(120+y)-y-(120)=0

We add all the numbers together, and all the variables

(y+120)-y-120=0

We add all the numbers together, and all the variables

-1y+(y+120)-120=0

We get rid of parentheses

-1y+y+120-120=0

We add all the numbers together, and all the variables

=0

y=0/1

y=0

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