4u+5=5u-15

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Solution for 4u+5=5u-15 equation:


Simplifying
4u + 5 = 5u + -15

Reorder the terms:
5 + 4u = 5u + -15

Reorder the terms:
5 + 4u = -15 + 5u

Solving
5 + 4u = -15 + 5u

Solving for variable 'u'.

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

Add '-5u' to each side of the equation.
5 + 4u + -5u = -15 + 5u + -5u

Combine like terms: 4u + -5u = -1u
5 + -1u = -15 + 5u + -5u

Combine like terms: 5u + -5u = 0
5 + -1u = -15 + 0
5 + -1u = -15

Add '-5' to each side of the equation.
5 + -5 + -1u = -15 + -5

Combine like terms: 5 + -5 = 0
0 + -1u = -15 + -5
-1u = -15 + -5

Combine like terms: -15 + -5 = -20
-1u = -20

Divide each side by '-1'.
u = 20

Simplifying
u = 20

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