2a+(-a-1)=17

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Solution for 2a+(-a-1)=17 equation: 



2a+(-a-1)=17

We move all terms to the left:

2a+(-a-1)-(17)=0

We add all the numbers together, and all the variables

2a+(-1a-1)-17=0

We get rid of parentheses

2a-1a-1-17=0

We add all the numbers together, and all the variables

a-18=0

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

a=18

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