-4=-1a+8-2a

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Solution for -4=-1a+8-2a equation:


Simplifying
-4 = -1a + 8 + -2a

Reorder the terms:
-4 = 8 + -1a + -2a

Combine like terms: -1a + -2a = -3a
-4 = 8 + -3a

Solving
-4 = 8 + -3a

Solving for variable 'a'.

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

Add '3a' to each side of the equation.
-4 + 3a = 8 + -3a + 3a

Combine like terms: -3a + 3a = 0
-4 + 3a = 8 + 0
-4 + 3a = 8

Add '4' to each side of the equation.
-4 + 4 + 3a = 8 + 4

Combine like terms: -4 + 4 = 0
0 + 3a = 8 + 4
3a = 8 + 4

Combine like terms: 8 + 4 = 12
3a = 12

Divide each side by '3'.
a = 4

Simplifying
a = 4

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