4u-3(u-7)=3(u+11)+(u+9)-2u

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Solution for 4u-3(u-7)=3(u+11)+(u+9)-2u equation:


Simplifying
4u + -3(u + -7) = 3(u + 11) + (u + 9) + -2u

Reorder the terms:
4u + -3(-7 + u) = 3(u + 11) + (u + 9) + -2u
4u + (-7 * -3 + u * -3) = 3(u + 11) + (u + 9) + -2u
4u + (21 + -3u) = 3(u + 11) + (u + 9) + -2u

Reorder the terms:
21 + 4u + -3u = 3(u + 11) + (u + 9) + -2u

Combine like terms: 4u + -3u = 1u
21 + 1u = 3(u + 11) + (u + 9) + -2u

Reorder the terms:
21 + 1u = 3(11 + u) + (u + 9) + -2u
21 + 1u = (11 * 3 + u * 3) + (u + 9) + -2u
21 + 1u = (33 + 3u) + (u + 9) + -2u

Reorder the terms:
21 + 1u = 33 + 3u + (9 + u) + -2u

Remove parenthesis around (9 + u)
21 + 1u = 33 + 3u + 9 + u + -2u

Reorder the terms:
21 + 1u = 33 + 9 + 3u + u + -2u

Combine like terms: 33 + 9 = 42
21 + 1u = 42 + 3u + u + -2u

Combine like terms: 3u + u = 4u
21 + 1u = 42 + 4u + -2u

Combine like terms: 4u + -2u = 2u
21 + 1u = 42 + 2u

Solving
21 + 1u = 42 + 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.
21 + 1u + -2u = 42 + 2u + -2u

Combine like terms: 1u + -2u = -1u
21 + -1u = 42 + 2u + -2u

Combine like terms: 2u + -2u = 0
21 + -1u = 42 + 0
21 + -1u = 42

Add '-21' to each side of the equation.
21 + -21 + -1u = 42 + -21

Combine like terms: 21 + -21 = 0
0 + -1u = 42 + -21
-1u = 42 + -21

Combine like terms: 42 + -21 = 21
-1u = 21

Divide each side by '-1'.
u = -21

Simplifying
u = -21

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