(-7b+4a)+(6a-9b)=

Solution for (-7b+4a)+(6a-9b)= equation:

Simplifying
(-7b + 4a) + (6a + -9b) = 0

Reorder the terms:
(4a + -7b) + (6a + -9b) = 0

Remove parenthesis around (4a + -7b)
4a + -7b + (6a + -9b) = 0

Remove parenthesis around (6a + -9b)
4a + -7b + 6a + -9b = 0

Reorder the terms:
4a + 6a + -7b + -9b = 0

Combine like terms: 4a + 6a = 10a
10a + -7b + -9b = 0

Combine like terms: -7b + -9b = -16b
10a + -16b = 0

Solving
10a + -16b = 0

Solving for variable 'a'.

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

Add '16b' to each side of the equation.
10a + -16b + 16b = 0 + 16b

Combine like terms: -16b + 16b = 0
10a + 0 = 0 + 16b
10a = 0 + 16b
Remove the zero:
10a = 16b

Divide each side by '10'.
a = 1.6b

Simplifying
a = 1.6b