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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