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Simplifying
3u2 + -9 = 234
Reorder the terms:
-9 + 3u2 = 234
Solving
-9 + 3u2 = 234
Solving for variable 'u'.
Move all terms containing u to the left, all other terms to the right.
Add '9' to each side of the equation.
-9 + 9 + 3u2 = 234 + 9
Combine like terms: -9 + 9 = 0
0 + 3u2 = 234 + 9
3u2 = 234 + 9
Combine like terms: 234 + 9 = 243
3u2 = 243
Divide each side by '3'.
u2 = 81
Simplifying
u2 = 81
Take the square root of each side:
u = {-9, 9}
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