Evaluate each expression

1. 2n - 7 , for n=8
2. 4ab, for a=2 and b=5
3. x+y over 3,for 3 = 7 and y = 8
4. 2(m+n), for m = 3 and n=2
5. 37 - 5h,for h=7
6.6 over a, for a=3 and b=7
7. 4x + 5y - 3z, for x= 3,y = 4,and z=2
8.15a-2(b+c),for a=2,b=3,and c=4
9.7p+q(3+r),for p=3,q=2,and r=1
10. 36 over j - 4(k_l),for j=2,k=1,and l=3
11. x + 3y - 4(z-3),for x=4,y=6,and z=5
12. (4+d) - e(9-f), for d = 7,e=4,f=8
13.3a - 2b + b(6 - 2),for a=4,b=2
14. r(p+3) + q(p-1),for p=7,q=4,r=3

1. 9
2. 40
3. I don't understand the question. Sorry!
4. 10
5. 2
6. Where is the b in the equation?
7. 26
8. 16
9. 29
10. 26
11. 14
12. 7
13. 16
14. 54

1. If n = 8, substitute "8" for every "n". In other words, n represents the number 8.
so: 2(8) - 7... multiply 2 by 8, and subtract by 7
2(8) - 7 = 9


2. Same thing, for every a represents the number 2, and b represents number 5.
4(2)(5) ... 4 x 2 x 5 = 40

Do the rest on your own.

just plug the number in to evaluate
1/
2n-7 = 2(8)-7 = 16-7 = 9
2/
4ab = 4(2)(5) = 40