3b-a-c=d

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Solution for 3b-a-c=d equation:


Simplifying
3b + -1a + -1c = d

Reorder the terms:
-1a + 3b + -1c = d

Solving
-1a + 3b + -1c = d

Solving for variable 'a'.

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

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

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

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

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

Divide each side by '-1'.
a = 3b + -1c + -1d

Simplifying
a = 3b + -1c + -1d

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