8a-(a-1)=3

Solution for 8a-(a-1)=3 equation:

Simplifying
8a + -1(a + -1) = 3

Reorder the terms:
8a + -1(-1 + a) = 3
8a + (-1 * -1 + a * -1) = 3
8a + (1 + -1a) = 3

Reorder the terms:
1 + 8a + -1a = 3

Combine like terms: 8a + -1a = 7a
1 + 7a = 3

Solving
1 + 7a = 3

Solving for variable 'a'.

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

Add '-1' to each side of the equation.
1 + -1 + 7a = 3 + -1

Combine like terms: 1 + -1 = 0
0 + 7a = 3 + -1
7a = 3 + -1

Combine like terms: 3 + -1 = 2
7a = 2

Divide each side by '7'.
a = 0.2857142857

Simplifying
a = 0.2857142857