Respuesta :

Answer: a= 3

Step-by-step explanation:

-6a= -18

a= -18/-6

a= 3

Answer:

13 a + -19 a = -18m

-13a        -13a

__________

                  6a = -18m

                   6a/6 =  -18m/6

                     a = 3

Step-by-step explanation: