64r^2=81

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Solution for 64r^2=81 equation: 


Simplifying
64r2 = 81

Solving
64r2 = 81

Solving for variable 'r'.

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

Divide each side by '64'.
r2 = 1.265625

Simplifying
r2 = 1.265625

Take the square root of each side:
r = {-1.125, 1.125}

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