Answer:
12
Step-by-step explanation:
So..... multiplication can be done at the same time as division, so we don't have to worry about the order of operations :)
so, 21 divided by 7 is 3
then, you multiply 3 by 4, which is 12
and btw, I also found another methoddddddddddddd
you can do, 21 times 4, which is 84, divided by 4 times 7, which is 28
84 divided by 28 is 3
then you multiply it by 4, it gives 12
and btw, that also works for other numbers too!!!!!!!!!!!!