a+b+c=20

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Solution for a+b+c=20 equation:


Simplifying
a + b + c = 20

Solving
a + b + c = 20

Solving for variable 'a'.

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

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

Combine like terms: b + -1b = 0
a + 0 + c = 20 + -1b
a + c = 20 + -1b

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

Combine like terms: c + -1c = 0
a + 0 = 20 + -1b + -1c
a = 20 + -1b + -1c

Simplifying
a = 20 + -1b + -1c

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