3a-7b-1(4a-3b)=

Solution for 3a-7b-1(4a-3b)= equation:

Simplifying
3a + -7b + -1(4a + -3b) = 0
3a + -7b + (4a * -1 + -3b * -1) = 0
3a + -7b + (-4a + 3b) = 0

Reorder the terms:
3a + -4a + -7b + 3b = 0

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

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

Solving
-1a + -4b = 0

Solving for variable 'a'.

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

Add '4b' to each side of the equation.
-1a + -4b + 4b = 0 + 4b

Combine like terms: -4b + 4b = 0
-1a + 0 = 0 + 4b
-1a = 0 + 4b
Remove the zero:
-1a = 4b

Divide each side by '-1'.
a = -4b

Simplifying
a = -4b