2(1-3r)-4(5+8r)=20

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Solution for 2(1-3r)-4(5+8r)=20 equation: 



2(1-3r)-4(5+8r)=20

We move all terms to the left:

2(1-3r)-4(5+8r)-(20)=0

We add all the numbers together, and all the variables

2(-3r+1)-4(8r+5)-20=0

We multiply parentheses

-6r-32r+2-20-20=0

We add all the numbers together, and all the variables

-38r-38=0

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

-38r=38

r=38/-38

r=-1

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