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Simplifying
9 = 5x2 + -15
Reorder the terms:
9 = -15 + 5x2
Solving
9 = -15 + 5x2
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-5x2' to each side of the equation.
9 + -5x2 = -15 + 5x2 + -5x2
Combine like terms: 5x2 + -5x2 = 0
9 + -5x2 = -15 + 0
9 + -5x2 = -15
Add '-9' to each side of the equation.
9 + -9 + -5x2 = -15 + -9
Combine like terms: 9 + -9 = 0
0 + -5x2 = -15 + -9
-5x2 = -15 + -9
Combine like terms: -15 + -9 = -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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