a-b-3c=P

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


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

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

Solving for variable 'a'.

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

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

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

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

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

Simplifying
a = P + b + 3c

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