4=-4(7-u)

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


Simplifying
4 = -4(7 + -1u)
4 = (7 * -4 + -1u * -4)
4 = (-28 + 4u)

Solving
4 = -28 + 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.
4 + -4u = -28 + 4u + -4u

Combine like terms: 4u + -4u = 0
4 + -4u = -28 + 0
4 + -4u = -28

Add '-4' to each side of the equation.
4 + -4 + -4u = -28 + -4

Combine like terms: 4 + -4 = 0
0 + -4u = -28 + -4
-4u = -28 + -4

Combine like terms: -28 + -4 = -32
-4u = -32

Divide each side by '-4'.
u = 8

Simplifying
u = 8

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