3.5=12u-5u

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Solution for 3.5=12u-5u equation:


Simplifying
3.5 = 12u + -5u

Combine like terms: 12u + -5u = 7u
3.5 = 7u

Solving
3.5 = 7u

Solving for variable 'u'.

Move all terms containing u to the left, all other terms to the right.

Add '-7u' to each side of the equation.
3.5 + -7u = 7u + -7u

Combine like terms: 7u + -7u = 0
3.5 + -7u = 0

Add '-3.5' to each side of the equation.
3.5 + -3.5 + -7u = 0 + -3.5

Combine like terms: 3.5 + -3.5 = 0.0
0.0 + -7u = 0 + -3.5
-7u = 0 + -3.5

Combine like terms: 0 + -3.5 = -3.5
-7u = -3.5

Divide each side by '-7'.
u = 0.5

Simplifying
u = 0.5

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