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Simplifying
5x2 + 9 = 40
Reorder the terms:
9 + 5x2 = 40
Solving
9 + 5x2 = 40
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 = 40 + -9
Combine like terms: 9 + -9 = 0
0 + 5x2 = 40 + -9
5x2 = 40 + -9
Combine like terms: 40 + -9 = 31
5x2 = 31
Divide each side by '5'.
x2 = 6.2
Simplifying
x2 = 6.2
Take the square root of each side:
x = {-2.48997992, 2.48997992}
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