3u-8=21u-6

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Solution for 3u-8=21u-6 equation:


Simplifying
3u + -8 = 21u + -6

Reorder the terms:
-8 + 3u = 21u + -6

Reorder the terms:
-8 + 3u = -6 + 21u

Solving
-8 + 3u = -6 + 21u

Solving for variable 'u'.

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

Add '-21u' to each side of the equation.
-8 + 3u + -21u = -6 + 21u + -21u

Combine like terms: 3u + -21u = -18u
-8 + -18u = -6 + 21u + -21u

Combine like terms: 21u + -21u = 0
-8 + -18u = -6 + 0
-8 + -18u = -6

Add '8' to each side of the equation.
-8 + 8 + -18u = -6 + 8

Combine like terms: -8 + 8 = 0
0 + -18u = -6 + 8
-18u = -6 + 8

Combine like terms: -6 + 8 = 2
-18u = 2

Divide each side by '-18'.
u = -0.1111111111

Simplifying
u = -0.1111111111

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