Answer:
2*400= 2*400*1
2*400
800
or
2 x 400 = 2 x 100 x 4
100 x 4
= 400
<u>I hope this helps:</u>
Sorry if it didn't :(
4. Cross multiply (10•6) (15•n) 15n=60 you do the opposite operation so instead of multiply 15•n you divided 15 from n. And what u do on one side u do on both. So divide 15 from 60 and u get 4.