6a-(-a-7b)-3a=

Solution for 6a-(-a-7b)-3a= equation:

Simplifying
6a + -1(-1a + -7b) + -3a = 0
6a + (-1a * -1 + -7b * -1) + -3a = 0
6a + (1a + 7b) + -3a = 0

Reorder the terms:
6a + 1a + -3a + 7b = 0

Combine like terms: 6a + 1a = 7a
7a + -3a + 7b = 0

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

Solving
4a + 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.
4a + 7b + -7b = 0 + -7b

Combine like terms: 7b + -7b = 0
4a + 0 = 0 + -7b
4a = 0 + -7b
Remove the zero:
4a = -7b

Divide each side by '4'.
a = -1.75b

Simplifying
a = -1.75b