a+3(a-1)-5a=

Solution for a+3(a-1)-5a= equation:

Simplifying
a + 3(a + -1) + -5a = 0

Reorder the terms:
a + 3(-1 + a) + -5a = 0
a + (-1 * 3 + a * 3) + -5a = 0
a + (-3 + 3a) + -5a = 0

Reorder the terms:
-3 + a + 3a + -5a = 0

Combine like terms: a + 3a = 4a
-3 + 4a + -5a = 0

Combine like terms: 4a + -5a = -1a
-3 + -1a = 0

Solving
-3 + -1a = 0

Solving for variable 'a'.

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

Add '3' to each side of the equation.
-3 + 3 + -1a = 0 + 3

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

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

Divide each side by '-1'.
a = -3

Simplifying
a = -3