Respuesta :

Answer:a=2

Step-by-step explanation:

Simplifying

a = 3a + -4

Reorder the terms:

a = -4 + 3a

Solving

a = -4 + 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.

a + -3a = -4 + 3a + -3a

Combine like terms: a + -3a = -2a

-2a = -4 + 3a + -3a

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

-2a = -4 + 0

-2a = -4

Divide each side by '-2'.

a = 2

Simplifying

a = 2

A=1 is the answer :)