a+-4a=1+-2a

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Solution for a+-4a=1+-2a equation: 


Simplifying
a + -4a = 1 + -2a

Combine like terms: a + -4a = -3a
-3a = 1 + -2a

Solving
-3a = 1 + -2a

Solving for variable 'a'.

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

Add '2a' to each side of the equation.
-3a + 2a = 1 + -2a + 2a

Combine like terms: -3a + 2a = -1a
-1a = 1 + -2a + 2a

Combine like terms: -2a + 2a = 0
-1a = 1 + 0
-1a = 1

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

Simplifying
a = -1

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