20=a-4

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Solution for 20=a-4 equation:


Simplifying
20 = a + -4

Reorder the terms:
20 = -4 + a

Solving
20 = -4 + a

Solving for variable 'a'.

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

Add '-1a' to each side of the equation.
20 + -1a = -4 + a + -1a

Combine like terms: a + -1a = 0
20 + -1a = -4 + 0
20 + -1a = -4

Add '-20' to each side of the equation.
20 + -20 + -1a = -4 + -20

Combine like terms: 20 + -20 = 0
0 + -1a = -4 + -20
-1a = -4 + -20

Combine like terms: -4 + -20 = -24
-1a = -24

Divide each side by '-1'.
a = 24

Simplifying
a = 24

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