7(7-3u)+u=8+u

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Solution for 7(7-3u)+u=8+u equation:


Simplifying
7(7 + -3u) + u = 8 + u
(7 * 7 + -3u * 7) + u = 8 + u
(49 + -21u) + u = 8 + u

Combine like terms: -21u + u = -20u
49 + -20u = 8 + u

Solving
49 + -20u = 8 + u

Solving for variable 'u'.

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

Add '-1u' to each side of the equation.
49 + -20u + -1u = 8 + u + -1u

Combine like terms: -20u + -1u = -21u
49 + -21u = 8 + u + -1u

Combine like terms: u + -1u = 0
49 + -21u = 8 + 0
49 + -21u = 8

Add '-49' to each side of the equation.
49 + -49 + -21u = 8 + -49

Combine like terms: 49 + -49 = 0
0 + -21u = 8 + -49
-21u = 8 + -49

Combine like terms: 8 + -49 = -41
-21u = -41

Divide each side by '-21'.
u = 1.952380952

Simplifying
u = 1.952380952

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