7u+4=1+8u

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Solution for 7u+4=1+8u equation:


Simplifying
7u + 4 = 1 + 8u

Reorder the terms:
4 + 7u = 1 + 8u

Solving
4 + 7u = 1 + 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 = 1 + 8u + -8u

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

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

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

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

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

Divide each side by '-1'.
u = 3

Simplifying
u = 3

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