If you have a fraction, take one number and put a different number on top or underneath, for example if you have 2 cats and 3 dogs, the ratio from cats to dogs would be 2:3 but if you did 2 cats to the total number of animals, you would add 2 and 3 and get 5, so the ratio would be 2:5.
Answer:

» Collect like terms, r terms on the left hand side by subtracting r from both sides and adding st to both sides

» On the left hand side, factorise out r

The thousands digit in this numeral is 8. which is also 8,000 . The hundreds digit which is 1 numeral behind the thousands in 300, not over 500 where then the next digit, the thousands cannot be rounded up, so if rounded to the nearest thousands, it will remain 8,000 so it will still be...
39,258,000 and thats it :) thx