10=2(2u-10)-1u-1u

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Solution for 10=2(2u-10)-1u-1u equation:


Simplifying
10 = 2(2u + -10) + -1u + -1u

Reorder the terms:
10 = 2(-10 + 2u) + -1u + -1u
10 = (-10 * 2 + 2u * 2) + -1u + -1u
10 = (-20 + 4u) + -1u + -1u

Combine like terms: 4u + -1u = 3u
10 = -20 + 3u + -1u

Combine like terms: 3u + -1u = 2u
10 = -20 + 2u

Solving
10 = -20 + 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.
10 + -2u = -20 + 2u + -2u

Combine like terms: 2u + -2u = 0
10 + -2u = -20 + 0
10 + -2u = -20

Add '-10' to each side of the equation.
10 + -10 + -2u = -20 + -10

Combine like terms: 10 + -10 = 0
0 + -2u = -20 + -10
-2u = -20 + -10

Combine like terms: -20 + -10 = -30
-2u = -30

Divide each side by '-2'.
u = 15

Simplifying
u = 15

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