-3a+(6-7a+9b)=

Solution for -3a+(6-7a+9b)= equation:

Simplifying
-3a + (6 + -7a + 9b) = 0

Remove parenthesis around (6 + -7a + 9b)
-3a + 6 + -7a + 9b = 0

Reorder the terms:
6 + -3a + -7a + 9b = 0

Combine like terms: -3a + -7a = -10a
6 + -10a + 9b = 0

Solving
6 + -10a + 9b = 0

Solving for variable 'a'.

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

Add '-6' to each side of the equation.
6 + -10a + -6 + 9b = 0 + -6

Reorder the terms:
6 + -6 + -10a + 9b = 0 + -6

Combine like terms: 6 + -6 = 0
0 + -10a + 9b = 0 + -6
-10a + 9b = 0 + -6

Combine like terms: 0 + -6 = -6
-10a + 9b = -6

Add '-9b' to each side of the equation.
-10a + 9b + -9b = -6 + -9b

Combine like terms: 9b + -9b = 0
-10a + 0 = -6 + -9b
-10a = -6 + -9b

Divide each side by '-10'.
a = 0.6 + 0.9b

Simplifying
a = 0.6 + 0.9b