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Simplifying
(12x2) = (7x2 + 20)
Reorder the terms:
(12x2) = (20 + 7x2)
Remove parenthesis around (20 + 7x2)
(12x2) = 20 + 7x2
Solving
(12x2) = 20 + 7x2
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-7x2' to each side of the equation.
(12x2) + -7x2 = 20 + 7x2 + -7x2
Combine like terms: (12x2) + -7x2 = 5x2
5x2 = 20 + 7x2 + -7x2
Combine like terms: 7x2 + -7x2 = 0
5x2 = 20 + 0
5x2 = 20
Divide each side by '5'.
x2 = 4
Simplifying
x2 = 4
Take the square root of each side:
x = {-2, 2}
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