3a+8b+7a-b=

Solution for 3a+8b+7a-b= equation:

Simplifying
3a + 8b + 7a + -1b = 0

Reorder the terms:
3a + 7a + 8b + -1b = 0

Combine like terms: 3a + 7a = 10a
10a + 8b + -1b = 0

Combine like terms: 8b + -1b = 7b
10a + 7b = 0

Solving
10a + 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.
10a + 7b + -7b = 0 + -7b

Combine like terms: 7b + -7b = 0
10a + 0 = 0 + -7b
10a = 0 + -7b
Remove the zero:
10a = -7b

Divide each side by '10'.
a = -0.7b

Simplifying
a = -0.7b