20=6(u+3)-8u

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Solution for 20=6(u+3)-8u equation:


Simplifying
20 = 6(u + 3) + -8u

Reorder the terms:
20 = 6(3 + u) + -8u
20 = (3 * 6 + u * 6) + -8u
20 = (18 + 6u) + -8u

Combine like terms: 6u + -8u = -2u
20 = 18 + -2u

Solving
20 = 18 + -2u

Solving for variable 'u'.

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

Add '2u' to each side of the equation.
20 + 2u = 18 + -2u + 2u

Combine like terms: -2u + 2u = 0
20 + 2u = 18 + 0
20 + 2u = 18

Add '-20' to each side of the equation.
20 + -20 + 2u = 18 + -20

Combine like terms: 20 + -20 = 0
0 + 2u = 18 + -20
2u = 18 + -20

Combine like terms: 18 + -20 = -2
2u = -2

Divide each side by '2'.
u = -1

Simplifying
u = -1

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