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Simplifying
71.7 = 2.8u2 + 54.7
Reorder the terms:
71.7 = 54.7 + 2.8u2
Solving
71.7 = 54.7 + 2.8u2
Solving for variable 'u'.
Move all terms containing u to the left, all other terms to the right.
Add '-2.8u2' to each side of the equation.
71.7 + -2.8u2 = 54.7 + 2.8u2 + -2.8u2
Combine like terms: 2.8u2 + -2.8u2 = 0.0
71.7 + -2.8u2 = 54.7 + 0.0
71.7 + -2.8u2 = 54.7
Add '-71.7' to each side of the equation.
71.7 + -71.7 + -2.8u2 = 54.7 + -71.7
Combine like terms: 71.7 + -71.7 = 0.0
0.0 + -2.8u2 = 54.7 + -71.7
-2.8u2 = 54.7 + -71.7
Combine like terms: 54.7 + -71.7 = -17
-2.8u2 = -17
Divide each side by '-2.8'.
u2 = 6.071428571
Simplifying
u2 = 6.071428571
Take the square root of each side:
u = {-2.464026901, 2.464026901}
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