7u-4=8u+4

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Solution for 7u-4=8u+4 equation:


Simplifying
7u + -4 = 8u + 4

Reorder the terms:
-4 + 7u = 8u + 4

Reorder the terms:
-4 + 7u = 4 + 8u

Solving
-4 + 7u = 4 + 8u

Solving for variable 'u'.

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

Add '-8u' to each side of the equation.
-4 + 7u + -8u = 4 + 8u + -8u

Combine like terms: 7u + -8u = -1u
-4 + -1u = 4 + 8u + -8u

Combine like terms: 8u + -8u = 0
-4 + -1u = 4 + 0
-4 + -1u = 4

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

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

Combine like terms: 4 + 4 = 8
-1u = 8

Divide each side by '-1'.
u = -8

Simplifying
u = -8

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