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Simplifying
7x2 + 12 = 579
Reorder the terms:
12 + 7x2 = 579
Solving
12 + 7x2 = 579
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-12' to each side of the equation.
12 + -12 + 7x2 = 579 + -12
Combine like terms: 12 + -12 = 0
0 + 7x2 = 579 + -12
7x2 = 579 + -12
Combine like terms: 579 + -12 = 567
7x2 = 567
Divide each side by '7'.
x2 = 81
Simplifying
x2 = 81
Take the square root of each side:
x = {-9, 9}
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