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

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


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

Reorder the terms:
-1 = -3u + 7(5 + u)
-1 = -3u + (5 * 7 + u * 7)
-1 = -3u + (35 + 7u)

Reorder the terms:
-1 = 35 + -3u + 7u

Combine like terms: -3u + 7u = 4u
-1 = 35 + 4u

Solving
-1 = 35 + 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.
-1 + -4u = 35 + 4u + -4u

Combine like terms: 4u + -4u = 0
-1 + -4u = 35 + 0
-1 + -4u = 35

Add '1' to each side of the equation.
-1 + 1 + -4u = 35 + 1

Combine like terms: -1 + 1 = 0
0 + -4u = 35 + 1
-4u = 35 + 1

Combine like terms: 35 + 1 = 36
-4u = 36

Divide each side by '-4'.
u = -9

Simplifying
u = -9

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