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Simplifying
(12 * 5 + -9x2) + 5 = 0
Multiply 12 * 5
(60 + -9x2) + 5 = 0
Remove parenthesis around (60 + -9x2)
60 + -9x2 + 5 = 0
Reorder the terms:
60 + 5 + -9x2 = 0
Combine like terms: 60 + 5 = 65
65 + -9x2 = 0
Solving
65 + -9x2 = 0
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-65' to each side of the equation.
65 + -65 + -9x2 = 0 + -65
Combine like terms: 65 + -65 = 0
0 + -9x2 = 0 + -65
-9x2 = 0 + -65
Combine like terms: 0 + -65 = -65
-9x2 = -65
Divide each side by '-9'.
x2 = 7.222222222
Simplifying
x2 = 7.222222222
Take the square root of each side:
x = {-2.687419249, 2.687419249}
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