Answer:
4 - 2.7
Step-by-step explanation:
Since the answer we want is 2.7 less than 4, you subtract 2.7 from 4 to get it.
If it was 2.7 is less than 4, you could make an inequality: 2.7<4
The less than sign works both ways, saying that 2.7 is less than 4 and that 4 is greater than 2.7.
I hope this helps :)
