Respuesta :

Answer:

The value of a + b = 9

Step-by-step explanation:

Step(i):-

Given expression

                     3(2m + 5) - 6(4m - 2)    

                 = 6 m + 15 -24m +12

                 = (6-24) m +27

                = -18 m +27

Step(ii):-

Given that the form  am + b

                             - 18 m + 27

where a=-18 and b = 27

The value of a + b =  - 18 + 27 = 9

Final answer:-

The value of a + b = 9