Respuesta :

Answer:

a = 6

Subtract  2a  from  5 a .

3 a − 6 = 12

Move all terms not containing  a  to the right side of the equation.

Add  6  to both sides of the equation.

3 a = 12 + 6

Add  12  and  6 .

3 a = 18

Divide each term by  3  and simplify.

Divide each term in  3 a = 18  by  3 .

3 a/ 3 = 18 /3

Reduce the expression by cancelling the common factors.

Cancel the common factor.

(3 a /3) *gone*  = 18/ 3

Divide  a  by  1 .

a = 18/ 3

Divide 18   by  3 .

a = 6

HOPE THIS HELPED!!!!!!!!!!!!!XDDDDDDDDDD

5a-6-2a=12
3a-6=12
3a=12+6
3a=18 (isolate variable)
18 divided my 3 is 6
a=6