HELP FAST LIKE QUICK! Please..

Answer:
2/5 < 7/10
Step-by-step explanation:
see 2/5 as a common number with 7/10 in the denominator 2 so 5x2 is 10 and 2x2 is 4 so 2/5 is now 4/10 maing 7/10 the bigger number