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Simplifying
125r2 + -45 = 0
Reorder the terms:
-45 + 125r2 = 0
Solving
-45 + 125r2 = 0
Solving for variable 'r'.
Move all terms containing r to the left, all other terms to the right.
Add '45' to each side of the equation.
-45 + 45 + 125r2 = 0 + 45
Combine like terms: -45 + 45 = 0
0 + 125r2 = 0 + 45
125r2 = 0 + 45
Combine like terms: 0 + 45 = 45
125r2 = 45
Divide each side by '125'.
r2 = 0.36
Simplifying
r2 = 0.36
Take the square root of each side:
r = {-0.6, 0.6}
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