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Simplifying
1384.74 = 3.1r2
Solving
1384.74 = 3.1r2
Solving for variable 'r'.
Move all terms containing r to the left, all other terms to the right.
Add '-3.1r2' to each side of the equation.
1384.74 + -3.1r2 = 3.1r2 + -3.1r2
Combine like terms: 3.1r2 + -3.1r2 = 0.0
1384.74 + -3.1r2 = 0.0
Add '-1384.74' to each side of the equation.
1384.74 + -1384.74 + -3.1r2 = 0.0 + -1384.74
Combine like terms: 1384.74 + -1384.74 = 0.00
0.00 + -3.1r2 = 0.0 + -1384.74
-3.1r2 = 0.0 + -1384.74
Combine like terms: 0.0 + -1384.74 = -1384.74
-3.1r2 = -1384.74
Divide each side by '-3.1'.
r2 = 446.6903226
Simplifying
r2 = 446.6903226
Take the square root of each side:
r = {-21.135049624, 21.135049624}
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