7(1n-5)+5n=5n+4(1n-5)

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Solution for 7(1n-5)+5n=5n+4(1n-5) equation: 



7(1n-5)+5n=5n+4(1n-5)

We move all terms to the left:

7(1n-5)+5n-(5n+4(1n-5))=0

We add all the numbers together, and all the variables

7(n-5)+5n-(5n+4(n-5))=0

We add all the numbers together, and all the variables

5n+7(n-5)-(5n+4(n-5))=0

We multiply parentheses

5n+7n-(5n+4(n-5))-35=0



We calculate terms in parentheses: -(5n+4(n-5)), so:

5n+4(n-5)

We multiply parentheses

5n+4n-20

We add all the numbers together, and all the variables

9n-20

Back to the equation:

-(9n-20)



We add all the numbers together, and all the variables

12n-(9n-20)-35=0

We get rid of parentheses

12n-9n+20-35=0

We add all the numbers together, and all the variables

3n-15=0

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

3n=15

n=15/3

n=5

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