3(r-1)-4(r-2)=-5

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



3(r-1)-4(r-2)=-5

We move all terms to the left:

3(r-1)-4(r-2)-(-5)=0

We add all the numbers together, and all the variables

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

We multiply parentheses

3r-4r-3+8+5=0

We add all the numbers together, and all the variables

-1r+10=0

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

-r=-10

r=-10/-1

r=+10

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