17=3(u+7)-7u

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


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

Reorder the terms:
17 = 3(7 + u) + -7u
17 = (7 * 3 + u * 3) + -7u
17 = (21 + 3u) + -7u

Combine like terms: 3u + -7u = -4u
17 = 21 + -4u

Solving
17 = 21 + -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 = 21 + -4u + 4u

Combine like terms: -4u + 4u = 0
17 + 4u = 21 + 0
17 + 4u = 21

Add '-17' to each side of the equation.
17 + -17 + 4u = 21 + -17

Combine like terms: 17 + -17 = 0
0 + 4u = 21 + -17
4u = 21 + -17

Combine like terms: 21 + -17 = 4
4u = 4

Divide each side by '4'.
u = 1

Simplifying
u = 1

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