20=4a+b

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Solution for 20=4a+b equation:


Simplifying
20 = 4a + b

Solving
20 = 4a + b

Solving for variable 'a'.

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

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

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

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

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

Divide each side by '-4'.
a = 5 + -0.25b

Simplifying
a = 5 + -0.25b

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