How do you do this A x 3 a plus 12?

Answer 1

Simplifying

a = 3a + 12

Reorder the terms:

a = 12 + 3a

Solving

a = 12 + 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 = 12 + 3a + -3a

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

-2a = 12 + 3a + -3a

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

-2a = 12 + 0

-2a = 12

Divide each side by '-2'.

a = -6

Simplifying

a = -6