rx^2+2x^2=3

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Solution for rx^2+2x^2=3 equation: 


Simplifying
rx2 + 2x2 = 3

Solving
rx2 + 2x2 = 3

Solving for variable 'r'.

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

Add '-2x2' to each side of the equation.
rx2 + 2x2 + -2x2 = 3 + -2x2

Combine like terms: 2x2 + -2x2 = 0
rx2 + 0 = 3 + -2x2
rx2 = 3 + -2x2

Divide each side by 'x2'.
r = 3x-2 + -2

Simplifying
r = 3x-2 + -2

Reorder the terms:
r = -2 + 3x-2

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