Answer:
Do you mean an equation? if so, then i think youd use this:
Step-by-step explanation:
(x+10)-1
Answer:
Step-by-step explanation:
See the attached image for the answer
Answer:

Step-by-step explanation:

28. multiply 12 by 5 =-60
29. divide 39 by 3 = 13
30.divide 15 by 4 = 3.75
31. multiply 2 by 10 = -20