13r^2+21+0=0

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Solution for 13r^2+21+0=0 equation:


Simplifying
13r2 + 21 + 0 = 0

Reorder the terms:
21 + 0 + 13r2 = 0

Combine like terms: 21 + 0 = 21
21 + 13r2 = 0

Solving
21 + 13r2 = 0

Solving for variable 'r'.

Move all terms containing r to the left, all other terms to the right.

Add '-21' to each side of the equation.
21 + -21 + 13r2 = 0 + -21

Combine like terms: 21 + -21 = 0
0 + 13r2 = 0 + -21
13r2 = 0 + -21

Combine like terms: 0 + -21 = -21
13r2 = -21

Divide each side by '13'.
r2 = -1.615384615

Simplifying
r2 = -1.615384615

Reorder the terms:
1.615384615 + r2 = -1.615384615 + 1.615384615

Combine like terms: -1.615384615 + 1.615384615 = 0.000000000
1.615384615 + r2 = 0.000000000

The solution to this equation could not be determined.

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