3a+b-c=8

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Solution for 3a+b-c=8 equation:


Simplifying
3a + b + -1c = 8

Solving
3a + b + -1c = 8

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.
3a + b + -1b + -1c = 8 + -1b

Combine like terms: b + -1b = 0
3a + 0 + -1c = 8 + -1b
3a + -1c = 8 + -1b

Add 'c' to each side of the equation.
3a + -1c + c = 8 + -1b + c

Combine like terms: -1c + c = 0
3a + 0 = 8 + -1b + c
3a = 8 + -1b + c

Divide each side by '3'.
a = 2.666666667 + -0.3333333333b + 0.3333333333c

Simplifying
a = 2.666666667 + -0.3333333333b + 0.3333333333c

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