A. Evoluate each expression for the given value of the variable
1.×+9; =2
2.4a-b; a=3, 6=5
3.3mn; m=-3, n=4
4.×+y; k=1, r=8
5.3×-r; k=1 r=8
6.8+-35; +=5, s=7
7.4p+2m; p+0, m=-3
8.-3(×-y); ×=10, y=4
9.6c-s+; c=6, s=3,+9
10.a+b+c; c=3, c=y​