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Simplifying
5x2 + 9 = 389
Reorder the terms:
9 + 5x2 = 389
Solving
9 + 5x2 = 389
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-9' to each side of the equation.
9 + -9 + 5x2 = 389 + -9
Combine like terms: 9 + -9 = 0
0 + 5x2 = 389 + -9
5x2 = 389 + -9
Combine like terms: 389 + -9 = 380
5x2 = 380
Divide each side by '5'.
x2 = 76
Simplifying
x2 = 76
Take the square root of each side:
x = {-8.717797887, 8.717797887}
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