4a+b=3a

Solution for 4a+b=3a equation:

Simplifying
4a + b = 3a

Solving
4a + b = 3a

Solving for variable 'a'.

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

Add '-3a' to each side of the equation.
4a + -3a + b = 3a + -3a

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

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

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

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

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

Simplifying
a = -1b