Answer:
1.2a+a=33
2.3a=33
3.a=11
Step-by-step explanation:
Answer:
a) 4.4583 b) Fiona
Step-by-step explanation:
First find the average of the numbers by adding them all together then dividing them by the amount of numbers given:

Then find the difference between each number and the answer you got

Which is

Which comes out to

Answer:
See below for explanation of the examples.
Step-by-step explanation:
Left example
It is an exercise in addition, i.e. 48+122=170, the answer is written in the bottom box.
Right example
It is an exercise in subtraction, i.e. 8 1/2 - 3 1/2 = 5
The answer is written in the bottom box.
There is no indication though as to when to do the addition, and when to do the subtraction. Perhaps it would be shown in the rest of the page (not shown).