-9a+11b+(-4a)-4b=

Solution for -9a+11b+(-4a)-4b= equation:

Simplifying
-9a + 11b + (-4a) + -4b = 0

Reorder the terms:
-9a + (-4a) + 11b + -4b = 0

Combine like terms: -9a + (-4a) = -13a
-13a + 11b + -4b = 0

Combine like terms: 11b + -4b = 7b
-13a + 7b = 0

Solving
-13a + 7b = 0

Solving for variable 'a'.

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

Add '-7b' to each side of the equation.
-13a + 7b + -7b = 0 + -7b

Combine like terms: 7b + -7b = 0
-13a + 0 = 0 + -7b
-13a = 0 + -7b
Remove the zero:
-13a = -7b

Divide each side by '-13'.
a = 0.5384615385b

Simplifying
a = 0.5384615385b