y+y+15+15=20

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Solution for y+y+15+15=20 equation: 



y+y+15+15=20

We move all terms to the left:

y+y+15+15-(20)=0

We add all the numbers together, and all the variables

2y+10=0

We move all terms containing y to the left, all other terms to the right

2y=-10

y=-10/2

y=-5

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