15=5a+2b+c

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Solution for 15=5a+2b+c equation: 


Simplifying
15 = 5a + 2b + c

Solving
15 = 5a + 2b + c

Solving for variable 'a'.

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

Add '-5a' to each side of the equation.
15 + -5a = 5a + 2b + -5a + c

Reorder the terms:
15 + -5a = 5a + -5a + 2b + c

Combine like terms: 5a + -5a = 0
15 + -5a = 0 + 2b + c
15 + -5a = 2b + c

Add '-15' to each side of the equation.
15 + -15 + -5a = 2b + -15 + c

Combine like terms: 15 + -15 = 0
0 + -5a = 2b + -15 + c
-5a = 2b + -15 + c

Reorder the terms:
-5a = -15 + 2b + c

Divide each side by '-5'.
a = 3 + -0.4b + -0.2c

Simplifying
a = 3 + -0.4b + -0.2c

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