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Simplifying
21y2 = 300
Solving
21y2 = 300
Solving for variable 'y'.
Move all terms containing y to the left, all other terms to the right.
Divide each side by '21'.
y2 = 14.28571429
Simplifying
y2 = 14.28571429
Take the square root of each side:
y = {-3.779644731, 3.779644731}
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