3a-4a=-1

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Solution for 3a-4a=-1 equation: 


Simplifying
3a + -4a = -1

Combine like terms: 3a + -4a = -1a
-1a = -1

Solving
-1a = -1

Solving for variable 'a'.

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

Divide each side by '-1'.
a = 1

Simplifying
a = 1

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