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Simplifying
-7x2 = -700
Solving
-7x2 = -700
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Divide each side by '-7'.
x2 = 100
Simplifying
x2 = 100
Take the square root of each side:
x = {-10, 10}
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