2. 70-1+24=46-1=45
3. 27+60-1=87-1=86
4. 52+40-1=92-1=91
5. 30-1+16=46-1=45
2. 46+30-2=76-2=74
3. 40-2+54=94-2=92
4. 27+20-2=47-2=45
5. 50-2+33=83-2=81