-879=-9+10(-10r+3)

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Solution for -879=-9+10(-10r+3) equation:


-879=-9+10(-10r+3)

We simplify the equation to the form, which is simple to understand 
-879=-9+10(-10r+3)

Reorder the terms in parentheses
-879=-9+(-100r+30)

Remove unnecessary parentheses
-879=-9-100r+30

We move all terms containing r to the left and all other terms to the right. 
+100r=-9+30+879

We simplify left and right side of the equation. 
+100r=+900

We divide both sides of the equation by 0100 to get r. 
r=9

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