6+3a-(5a+5)-(4a+5)=

Solution for 6+3a-(5a+5)-(4a+5)= equation:

Simplifying
6 + 3a + -1(5a + 5) + -1(4a + 5) = 0

Reorder the terms:
6 + 3a + -1(5 + 5a) + -1(4a + 5) = 0
6 + 3a + (5 * -1 + 5a * -1) + -1(4a + 5) = 0
6 + 3a + (-5 + -5a) + -1(4a + 5) = 0

Reorder the terms:
6 + 3a + -5 + -5a + -1(5 + 4a) = 0
6 + 3a + -5 + -5a + (5 * -1 + 4a * -1) = 0
6 + 3a + -5 + -5a + (-5 + -4a) = 0

Reorder the terms:
6 + -5 + -5 + 3a + -5a + -4a = 0

Combine like terms: 6 + -5 = 1
1 + -5 + 3a + -5a + -4a = 0

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

Combine like terms: 3a + -5a = -2a
-4 + -2a + -4a = 0

Combine like terms: -2a + -4a = -6a
-4 + -6a = 0

Solving
-4 + -6a = 0

Solving for variable 'a'.

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

Add '4' to each side of the equation.
-4 + 4 + -6a = 0 + 4

Combine like terms: -4 + 4 = 0
0 + -6a = 0 + 4
-6a = 0 + 4

Combine like terms: 0 + 4 = 4
-6a = 4

Divide each side by '-6'.
a = -0.6666666667

Simplifying
a = -0.6666666667