3(1+5a)-4=-4(-2a-5)

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Solution for 3(1+5a)-4=-4(-2a-5) equation: 



3(1+5a)-4=-4(-2a-5)

We move all terms to the left:

3(1+5a)-4-(-4(-2a-5))=0

We add all the numbers together, and all the variables

3(5a+1)-(-4(-2a-5))-4=0

We multiply parentheses

15a-(-4(-2a-5))+3-4=0



We calculate terms in parentheses: -(-4(-2a-5)), so:

-4(-2a-5)

We multiply parentheses

8a+20

Back to the equation:

-(8a+20)



We add all the numbers together, and all the variables

15a-(8a+20)-1=0

We get rid of parentheses

15a-8a-20-1=0

We add all the numbers together, and all the variables

7a-21=0

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

7a=21

a=21/7

a=3

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