(9a+2b-4)+(7b-2)=

Solution for (9a+2b-4)+(7b-2)= equation:

Simplifying
(9a + 2b + -4) + (7b + -2) = 0

Reorder the terms:
(-4 + 9a + 2b) + (7b + -2) = 0

Remove parenthesis around (-4 + 9a + 2b)
-4 + 9a + 2b + (7b + -2) = 0

Reorder the terms:
-4 + 9a + 2b + (-2 + 7b) = 0

Remove parenthesis around (-2 + 7b)
-4 + 9a + 2b + -2 + 7b = 0

Reorder the terms:
-4 + -2 + 9a + 2b + 7b = 0

Combine like terms: -4 + -2 = -6
-6 + 9a + 2b + 7b = 0

Combine like terms: 2b + 7b = 9b
-6 + 9a + 9b = 0

Solving
-6 + 9a + 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 + 9a + 6 + 9b = 0 + 6

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

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

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

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

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

Divide each side by '9'.
a = 0.6666666667 + -1b

Simplifying
a = 0.6666666667 + -1b