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Simplifying
5x2 + -16 = 84
Reorder the terms:
-16 + 5x2 = 84
Solving
-16 + 5x2 = 84
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '16' to each side of the equation.
-16 + 16 + 5x2 = 84 + 16
Combine like terms: -16 + 16 = 0
0 + 5x2 = 84 + 16
5x2 = 84 + 16
Combine like terms: 84 + 16 = 100
5x2 = 100
Divide each side by '5'.
x2 = 20
Simplifying
x2 = 20
Take the square root of each side:
x = {-4.472135955, 4.472135955}
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