105-2a=5a

Solution for 105-2a=5a equation:

Simplifying
105 + -2a = 5a

Solving
105 + -2a = 5a

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.
105 + -2a + -5a = 5a + -5a

Combine like terms: -2a + -5a = -7a
105 + -7a = 5a + -5a

Combine like terms: 5a + -5a = 0
105 + -7a = 0

Add '-105' to each side of the equation.
105 + -105 + -7a = 0 + -105

Combine like terms: 105 + -105 = 0
0 + -7a = 0 + -105
-7a = 0 + -105

Combine like terms: 0 + -105 = -105
-7a = -105

Divide each side by '-7'.
a = 15

Simplifying
a = 15