a-3xY=42

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Solution for a-3xY=42 equation: 


Simplifying
a + -3xY = 42

Solving
a + -3xY = 42

Solving for variable 'a'.

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

Add '3xY' to each side of the equation.
a + -3xY + 3xY = 42 + 3xY

Combine like terms: -3xY + 3xY = 0
a + 0 = 42 + 3xY
a = 42 + 3xY

Simplifying
a = 42 + 3xY

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