20=a-6a

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Solution for 20=a-6a equation:


Simplifying
20 = a + -6a

Combine like terms: a + -6a = -5a
20 = -5a

Solving
20 = -5a

Solving for variable 'a'.

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

Add '5a' to each side of the equation.
20 + 5a = -5a + 5a

Combine like terms: -5a + 5a = 0
20 + 5a = 0

Add '-20' to each side of the equation.
20 + -20 + 5a = 0 + -20

Combine like terms: 20 + -20 = 0
0 + 5a = 0 + -20
5a = 0 + -20

Combine like terms: 0 + -20 = -20
5a = -20

Divide each side by '5'.
a = -4

Simplifying
a = -4

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