Question

9- ____+3× ______=15-

Answer 1

Resposta:

9-f+3.f=15

9+2f=15

2f=15-9

2f=6

f=6/2=3

9 - 3 + 3 x 3 = 15

9 - 3 + 9 = 15

6 + 9 = 15

15=15

espero que tenha entendido