can u help me by splitting them its to hard!

1.87-8=
2.53-5=
3.92-5=
4.65-8=
5.23-5=
6.84-8=
7.91-9=

A few:

1) 87-8 =88-8+1
5) 23-5= 20-5+3
7) 91-9=90-9+1

A few:

1) 87-8 =88-8+1
5) 23-5= 20-5+3
7) 91-9=90-9+1