7(-3r+10)=-8r-8

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Solution for 7(-3r+10)=-8r-8 equation: 



7(-3r+10)=-8r-8

We move all terms to the left:

7(-3r+10)-(-8r-8)=0

We multiply parentheses

-21r-(-8r-8)+70=0

We get rid of parentheses

-21r+8r+8+70=0

We add all the numbers together, and all the variables

-13r+78=0

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

-13r=-78

r=-78/-13

r=+6

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