2a+15=3a+c

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Solution for 2a+15=3a+c equation: 


Simplifying
2a + 15 = 3a + c

Reorder the terms:
15 + 2a = 3a + c

Solving
15 + 2a = 3a + c

Solving for variable 'a'.

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

Add '-3a' to each side of the equation.
15 + 2a + -3a = 3a + -3a + c

Combine like terms: 2a + -3a = -1a
15 + -1a = 3a + -3a + c

Combine like terms: 3a + -3a = 0
15 + -1a = 0 + c
15 + -1a = c

Add '-15' to each side of the equation.
15 + -15 + -1a = -15 + c

Combine like terms: 15 + -15 = 0
0 + -1a = -15 + c
-1a = -15 + c

Divide each side by '-1'.
a = 15 + -1c

Simplifying
a = 15 + -1c

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