5a+4b=20

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Solution for 5a+4b=20 equation: 


Simplifying
5a + 4b = 20

Solving
5a + 4b = 20

Solving for variable 'a'.

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

Add '-4b' to each side of the equation.
5a + 4b + -4b = 20 + -4b

Combine like terms: 4b + -4b = 0
5a + 0 = 20 + -4b
5a = 20 + -4b

Divide each side by '5'.
a = 4 + -0.8b

Simplifying
a = 4 + -0.8b

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