1)if it's a decimal than u don't have to do much just do it normally.
2)if it a fraction, turn it into a decimal and do it. but u can do it as a fraction too.
3)if it's a mixed number turn it into decimal or improper fraction and do what ur suppose to do.
*it's you choice. chose either decimal or fraction. it's ur choice. do wuts easier for u.
2.25 = 0.75d
3 = d
remember that any number which can be expressed as a fraction is a ratio, i.e. a RATIOnal number.
1) set up your equation 3/8p=6/8 then divide 3/8 from both sides (remember when you divide fractions you would multiply by the reciprocal so 3/8 x 8/6. Also make sure you simplify)
2) Do the same here. 38/7 divided by 19/21
3) Turn the fraction into an improper fraction then multiply 126 by that amount (3/6)