1=-7u+4(u+7)

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Solution for 1=-7u+4(u+7) equation:


Simplifying
1 = -7u + 4(u + 7)

Reorder the terms:
1 = -7u + 4(7 + u)
1 = -7u + (7 * 4 + u * 4)
1 = -7u + (28 + 4u)

Reorder the terms:
1 = 28 + -7u + 4u

Combine like terms: -7u + 4u = -3u
1 = 28 + -3u

Solving
1 = 28 + -3u

Solving for variable 'u'.

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

Add '3u' to each side of the equation.
1 + 3u = 28 + -3u + 3u

Combine like terms: -3u + 3u = 0
1 + 3u = 28 + 0
1 + 3u = 28

Add '-1' to each side of the equation.
1 + -1 + 3u = 28 + -1

Combine like terms: 1 + -1 = 0
0 + 3u = 28 + -1
3u = 28 + -1

Combine like terms: 28 + -1 = 27
3u = 27

Divide each side by '3'.
u = 9

Simplifying
u = 9

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