Answer:
let required no be x

by doing crisscrossed multiplication

42=7x
dividing both side by 7

6=x
therefore x=6
therefore value of remaining no.is 6
Answer:
I think the answer would be 'a'
Answer:
Number one! :D
Step-by-step explanation:
3
−
1
=
3
−
1
3
−
1
+
1
=
3
−
1
+
1
0
=
0
Answer:
48
Step-by-step explanation: