Respuesta :

Answer:

15j

Step-by-step explanation:

7j+7j-9j+10j

=14j-9j+10j

=5j+10j

=15j

i think the bracket was supposed to be a j

Answer:

15j

Step-by-step explanation:

I'm assuming 7] means 7j and to ignore the asterisk. The equation is in terms of j so you can just pay attention to the number before it, 7+7-9+10=15. But since it's in terms of j the answer is 15j