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Simplifying
(5x3 + -9x2 + 7) + -1(7 + -9X2 + 5x3) = 0
Reorder the terms:
(7 + -9x2 + 5x3) + -1(7 + -9X2 + 5x3) = 0
Remove parenthesis around (7 + -9x2 + 5x3)
7 + -9x2 + 5x3 + -1(7 + -9X2 + 5x3) = 0
7 + -9x2 + 5x3 + (7 * -1 + -9X2 * -1 + 5x3 * -1) = 0
7 + -9x2 + 5x3 + (-7 + 9X2 + -5x3) = 0
Reorder the terms:
7 + -7 + 9X2 + -9x2 + 5x3 + -5x3 = 0
Combine like terms: 7 + -7 = 0
0 + 9X2 + -9x2 + 5x3 + -5x3 = 0
9X2 + -9x2 + 5x3 + -5x3 = 0
Combine like terms: 5x3 + -5x3 = 0
9X2 + -9x2 + 0 = 0
9X2 + -9x2 = 0
Solving
9X2 + -9x2 = 0
Solving for variable 'X'.
Move all terms containing X to the left, all other terms to the right.
Add '9x2' to each side of the equation.
9X2 + -9x2 + 9x2 = 0 + 9x2
Combine like terms: -9x2 + 9x2 = 0
9X2 + 0 = 0 + 9x2
9X2 = 0 + 9x2
Remove the zero:
9X2 = 9x2
Divide each side by '9'.
X2 = x2
Simplifying
X2 = x2
Take the square root of each side:
X = {-1x, x}
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