x+u+a=30

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Solution for x+u+a=30 equation:


Simplifying
x + u + a = 30

Reorder the terms:
a + u + x = 30

Solving
a + u + x = 30

Solving for variable 'a'.

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

Add '-1u' to each side of the equation.
a + u + -1u + x = 30 + -1u

Combine like terms: u + -1u = 0
a + 0 + x = 30 + -1u
a + x = 30 + -1u

Add '-1x' to each side of the equation.
a + x + -1x = 30 + -1u + -1x

Combine like terms: x + -1x = 0
a + 0 = 30 + -1u + -1x
a = 30 + -1u + -1x

Simplifying
a = 30 + -1u + -1x

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