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Simplifying
7x2 = 81
Solving
7x2 = 81
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Divide each side by '7'.
x2 = 11.57142857
Simplifying
x2 = 11.57142857
Take the square root of each side:
x = {-3.401680257, 3.401680257}
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