17=3(u+3)-7u

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Solution for 17=3(u+3)-7u equation:


Simplifying
17 = 3(u + 3) + -7u

Reorder the terms:
17 = 3(3 + u) + -7u
17 = (3 * 3 + u * 3) + -7u
17 = (9 + 3u) + -7u

Combine like terms: 3u + -7u = -4u
17 = 9 + -4u

Solving
17 = 9 + -4u

Solving for variable 'u'.

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

Add '4u' to each side of the equation.
17 + 4u = 9 + -4u + 4u

Combine like terms: -4u + 4u = 0
17 + 4u = 9 + 0
17 + 4u = 9

Add '-17' to each side of the equation.
17 + -17 + 4u = 9 + -17

Combine like terms: 17 + -17 = 0
0 + 4u = 9 + -17
4u = 9 + -17

Combine like terms: 9 + -17 = -8
4u = -8

Divide each side by '4'.
u = -2

Simplifying
u = -2

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