3u+87=15u-69

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Solution for 3u+87=15u-69 equation:


Simplifying
3u + 87 = 15u + -69

Reorder the terms:
87 + 3u = 15u + -69

Reorder the terms:
87 + 3u = -69 + 15u

Solving
87 + 3u = -69 + 15u

Solving for variable 'u'.

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

Add '-15u' to each side of the equation.
87 + 3u + -15u = -69 + 15u + -15u

Combine like terms: 3u + -15u = -12u
87 + -12u = -69 + 15u + -15u

Combine like terms: 15u + -15u = 0
87 + -12u = -69 + 0
87 + -12u = -69

Add '-87' to each side of the equation.
87 + -87 + -12u = -69 + -87

Combine like terms: 87 + -87 = 0
0 + -12u = -69 + -87
-12u = -69 + -87

Combine like terms: -69 + -87 = -156
-12u = -156

Divide each side by '-12'.
u = 13

Simplifying
u = 13

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