20+2a=5(a+1)

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Solution for 20+2a=5(a+1) equation: 



20+2a=5(a+1)

We move all terms to the left:

20+2a-(5(a+1))=0



We calculate terms in parentheses: -(5(a+1)), so:

5(a+1)

We multiply parentheses

5a+5

Back to the equation:

-(5a+5)



We get rid of parentheses

2a-5a-5+20=0

We add all the numbers together, and all the variables

-3a+15=0

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

-3a=-15

a=-15/-3

a=+5

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