6-3a=9-(2a+5)

Solution for 6-3a=9-(2a+5) equation:

Simplifying
6 + -3a = 9 + -1(2a + 5)

Reorder the terms:
6 + -3a = 9 + -1(5 + 2a)
6 + -3a = 9 + (5 * -1 + 2a * -1)
6 + -3a = 9 + (-5 + -2a)

Combine like terms: 9 + -5 = 4
6 + -3a = 4 + -2a

Solving
6 + -3a = 4 + -2a

Solving for variable 'a'.

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

Add '2a' to each side of the equation.
6 + -3a + 2a = 4 + -2a + 2a

Combine like terms: -3a + 2a = -1a
6 + -1a = 4 + -2a + 2a

Combine like terms: -2a + 2a = 0
6 + -1a = 4 + 0
6 + -1a = 4

Add '-6' to each side of the equation.
6 + -6 + -1a = 4 + -6

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

Combine like terms: 4 + -6 = -2
-1a = -2

Divide each side by '-1'.
a = 2

Simplifying
a = 2