10=a+b+c

Solution for 10=a+b+c equation:

Simplifying
10 = a + b + c

Solving
10 = a + b + c

Solving for variable 'a'.

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

Add '-1a' to each side of the equation.
10 + -1a = a + b + -1a + c

Reorder the terms:
10 + -1a = a + -1a + b + c

Combine like terms: a + -1a = 0
10 + -1a = 0 + b + c
10 + -1a = b + c

Add '-10' to each side of the equation.
10 + -10 + -1a = b + -10 + c

Combine like terms: 10 + -10 = 0
0 + -1a = b + -10 + c
-1a = b + -10 + c

Reorder the terms:
-1a = -10 + b + c

Divide each side by '-1'.
a = 10 + -1b + -1c

Simplifying
a = 10 + -1b + -1c