20 x=5 I hope this helps
22.x=15
Look at the table for each type of bird. 5x=15. 6x=18. 10x=30. What would you multiply each of those by to get your answer and find the difference? 5x=15; x= 3. It is the same for each number. So the difference is by 3. I think if I understand this correctly, that would be how you do it. Does this help?
The answer would be 15,120
Let’s place x in the blank
7.14 + 33/100 = x/100 + 33/100
x = 714
it is a bracket used in maths