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Simplifying
9r2 + -16y2 = 0
Solving
9r2 + -16y2 = 0
Solving for variable 'r'.
Move all terms containing r to the left, all other terms to the right.
Add '16y2' to each side of the equation.
9r2 + -16y2 + 16y2 = 0 + 16y2
Combine like terms: -16y2 + 16y2 = 0
9r2 + 0 = 0 + 16y2
9r2 = 0 + 16y2
Remove the zero:
9r2 = 16y2
Divide each side by '9'.
r2 = 1.777777778y2
Simplifying
r2 = 1.777777778y2
Take the square root of each side:
r = {-1.333333333y, 1.333333333y}
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