Subtract 1-digit from a 2-digit number

Solve these mental math problems!

1) Solve
84-9=
2) Solve
50-6=
3) Solve
63-3=
4) Solve
34-1=
5) Solve
41-6=
6) Solve
11-1=
7) Solve
30-3=
8) Solve
61-7=
9) Solve
12-7=
10) Solve
95-7=
11) Solve
63-1=
12) Solve
92-1=
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