8a-4b-(7a-7b)=

Solution for 8a-4b-(7a-7b)= equation:

Simplifying
8a + -4b + -1(7a + -7b) = 0
8a + -4b + (7a * -1 + -7b * -1) = 0
8a + -4b + (-7a + 7b) = 0

Reorder the terms:
8a + -7a + -4b + 7b = 0

Combine like terms: 8a + -7a = 1a
1a + -4b + 7b = 0

Combine like terms: -4b + 7b = 3b
1a + 3b = 0

Solving
1a + 3b = 0

Solving for variable 'a'.

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

Add '-3b' to each side of the equation.
1a + 3b + -3b = 0 + -3b

Combine like terms: 3b + -3b = 0
1a + 0 = 0 + -3b
1a = 0 + -3b
Remove the zero:
1a = -3b

Divide each side by '1'.
a = -3b

Simplifying
a = -3b