-4=-20a

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Solution for -4=-20a equation:


Simplifying
-4 = -20a

Solving
-4 = -20a

Solving for variable 'a'.

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

Add '20a' to each side of the equation.
-4 + 20a = -20a + 20a

Combine like terms: -20a + 20a = 0
-4 + 20a = 0

Add '4' to each side of the equation.
-4 + 4 + 20a = 0 + 4

Combine like terms: -4 + 4 = 0
0 + 20a = 0 + 4
20a = 0 + 4

Combine like terms: 0 + 4 = 4
20a = 4

Divide each side by '20'.
a = 0.2

Simplifying
a = 0.2

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