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Simplifying
5x2 + -15 = 9
Reorder the terms:
-15 + 5x2 = 9
Solving
-15 + 5x2 = 9
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '15' to each side of the equation.
-15 + 15 + 5x2 = 9 + 15
Combine like terms: -15 + 15 = 0
0 + 5x2 = 9 + 15
5x2 = 9 + 15
Combine like terms: 9 + 15 = 24
5x2 = 24
Divide each side by '5'.
x2 = 4.8
Simplifying
x2 = 4.8
Take the square root of each side:
x = {-2.19089023, 2.19089023}
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