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Simplifying
55x2 + 9 = 45
Reorder the terms:
9 + 55x2 = 45
Solving
9 + 55x2 = 45
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 + 55x2 = 45 + -9
Combine like terms: 9 + -9 = 0
0 + 55x2 = 45 + -9
55x2 = 45 + -9
Combine like terms: 45 + -9 = 36
55x2 = 36
Divide each side by '55'.
x2 = 0.6545454545
Simplifying
x2 = 0.6545454545
Take the square root of each side:
x = {-0.809039835, 0.809039835}
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