Question

plz plz solve these sums for me​

Answer 1

1) m-2

2-2=0

2)3m-5

3(2)-5=6-5=1

3)9-5m

9-5(2)=9-10=-1

4)3m^2-2m-7

3(2^2)-2(2)-7

12-4-7=12-11=1

5)5m/2-4

5(2)/2-4

5-4=1