(5a-5)-15=(3a+6)+4

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Solution for (5a-5)-15=(3a+6)+4 equation: 



(5a-5)-15=(3a+6)+4

We move all terms to the left:

(5a-5)-15-((3a+6)+4)=0

We get rid of parentheses

5a-((3a+6)+4)-5-15=0



We calculate terms in parentheses: -((3a+6)+4), so:

(3a+6)+4

We get rid of parentheses

3a+6+4

We add all the numbers together, and all the variables

3a+10

Back to the equation:

-(3a+10)



We add all the numbers together, and all the variables

5a-(3a+10)-20=0

We get rid of parentheses

5a-3a-10-20=0

We add all the numbers together, and all the variables

2a-30=0

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

2a=30

a=30/2

a=15

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