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Simplifying
7x2 + 8 = 12
Reorder the terms:
8 + 7x2 = 12
Solving
8 + 7x2 = 12
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-8' to each side of the equation.
8 + -8 + 7x2 = 12 + -8
Combine like terms: 8 + -8 = 0
0 + 7x2 = 12 + -8
7x2 = 12 + -8
Combine like terms: 12 + -8 = 4
7x2 = 4
Divide each side by '7'.
x2 = 0.5714285714
Simplifying
x2 = 0.5714285714
Take the square root of each side:
x = {-0.755928946, 0.755928946}
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