-3u-5=-7(u-1)

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Solution for -3u-5=-7(u-1) equation:


Simplifying
-3u + -5 = -7(u + -1)

Reorder the terms:
-5 + -3u = -7(u + -1)

Reorder the terms:
-5 + -3u = -7(-1 + u)
-5 + -3u = (-1 * -7 + u * -7)
-5 + -3u = (7 + -7u)

Solving
-5 + -3u = 7 + -7u

Solving for variable 'u'.

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

Add '7u' to each side of the equation.
-5 + -3u + 7u = 7 + -7u + 7u

Combine like terms: -3u + 7u = 4u
-5 + 4u = 7 + -7u + 7u

Combine like terms: -7u + 7u = 0
-5 + 4u = 7 + 0
-5 + 4u = 7

Add '5' to each side of the equation.
-5 + 5 + 4u = 7 + 5

Combine like terms: -5 + 5 = 0
0 + 4u = 7 + 5
4u = 7 + 5

Combine like terms: 7 + 5 = 12
4u = 12

Divide each side by '4'.
u = 3

Simplifying
u = 3

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