2a-36=a+42

Solution for 2a-36=a+42 equation:

Simplifying
2a + -36 = a + 42

Reorder the terms:
-36 + 2a = a + 42

Reorder the terms:
-36 + 2a = 42 + a

Solving
-36 + 2a = 42 + a

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.
-36 + 2a + -1a = 42 + a + -1a

Combine like terms: 2a + -1a = 1a
-36 + 1a = 42 + a + -1a

Combine like terms: a + -1a = 0
-36 + 1a = 42 + 0
-36 + 1a = 42

Add '36' to each side of the equation.
-36 + 36 + 1a = 42 + 36

Combine like terms: -36 + 36 = 0
0 + 1a = 42 + 36
1a = 42 + 36

Combine like terms: 42 + 36 = 78
1a = 78

Divide each side by '1'.
a = 78

Simplifying
a = 78