Question 992380
hi dear,
Let the two digi number be xy,
x+y=7----(1)
x=y+1----(2)
put 2 in 1
y+1+y=7
2y=7-1
2y=6
y=3
put y=3 in 2
x=3+1
x=4
The two digit number XY is 43
HOPE THIS HELPS?