Basic Substitution
Think & Solve
Danger Zone
100

If x=3, find 2x+5 

11

100

if x=5, find x+2x

15

100

if h=9 and f=7, find f-h

-2

300

if y=4, find 3y-2

10

300

if g=5, find 3g+2g+1

26

300

if b=6, find 2b+b-25

-7

500

if u=2, u+3u

8

500

if p=13, find 2p-7

19

500

if r=27, a box has r items. two boxes are combined and 15 more are added. what is the total

69