189=-7(4r-3)

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Solution for 189=-7(4r-3) equation: 



189=-7(4r-3)

We move all terms to the left:

189-(-7(4r-3))=0



We calculate terms in parentheses: -(-7(4r-3)), so:

-7(4r-3)

We multiply parentheses

-28r+21

Back to the equation:

-(-28r+21)



We get rid of parentheses

28r-21+189=0

We add all the numbers together, and all the variables

28r+168=0

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

28r=-168

r=-168/28

r=-6

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