4a+a+a+(a-5)=30

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Solution for 4a+a+a+(a-5)=30 equation: 



4a+a+a+(a-5)=30

We move all terms to the left:

4a+a+a+(a-5)-(30)=0

We add all the numbers together, and all the variables

6a+(a-5)-30=0

We get rid of parentheses

6a+a-5-30=0

We add all the numbers together, and all the variables

7a-35=0

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

7a=35

a=35/7

a=5

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