Respuesta :
7j - 4j = 3j
3 + 9= 12
→Therefore, your answer would change to : 3j + 12
Or , you can put 3(J) + 12 :)
Just combine your like terms
3 + 9= 12
→Therefore, your answer would change to : 3j + 12
Or , you can put 3(J) + 12 :)
Just combine your like terms