10(a-9)-a=0

Solution for 10(a-9)-a=0 equation:

Simplifying
10(a + -9) + -1a = 0

Reorder the terms:
10(-9 + a) + -1a = 0
(-9 * 10 + a * 10) + -1a = 0
(-90 + 10a) + -1a = 0

Combine like terms: 10a + -1a = 9a
-90 + 9a = 0

Solving
-90 + 9a = 0

Solving for variable 'a'.

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

Add '90' to each side of the equation.
-90 + 90 + 9a = 0 + 90

Combine like terms: -90 + 90 = 0
0 + 9a = 0 + 90
9a = 0 + 90

Combine like terms: 0 + 90 = 90
9a = 90

Divide each side by '9'.
a = 10

Simplifying
a = 10