Respuesta :

Answer:

B

Step-by-step explanation:

9 multiple 2m = 18m

9 multiple 5n = 45n

9 multiple 10= 90

Answer:

B

Step-by-step explanation:

9×2m=18m

9×5n=45n

9×10=90

so,our answer is 18m+45n+90

Q&A Education