5r+4(1-5r)=-(2r+12)-5r

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Solution for 5r+4(1-5r)=-(2r+12)-5r equation: 



5r+4(1-5r)=-(2r+12)-5r

We move all terms to the left:

5r+4(1-5r)-(-(2r+12)-5r)=0

We add all the numbers together, and all the variables

5r+4(-5r+1)-(-(2r+12)-5r)=0

We multiply parentheses

5r-20r-(-(2r+12)-5r)+4=0



We calculate terms in parentheses: -(-(2r+12)-5r), so:

-(2r+12)-5r

We add all the numbers together, and all the variables

-5r-(2r+12)

We get rid of parentheses

-5r-2r-12

We add all the numbers together, and all the variables

-7r-12

Back to the equation:

-(-7r-12)



We add all the numbers together, and all the variables

-15r-(-7r-12)+4=0

We get rid of parentheses

-15r+7r+12+4=0

We add all the numbers together, and all the variables

-8r+16=0

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

-8r=-16

r=-16/-8

r=+2

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