Question

What can be multiply 7:21 to get an equalivent ratio

Answer 1

Answer:

7:21 can be written as 7/21 as fraction. Multiply or divide both numerator and denominator by the same number and you've got your answer. Finally, express the fraction as a ratio.

Step-by-step explanation:

For example,

7:21 = 7/21 = (7/7)/(21/7) = 1/3 = 1:3

OR

7:21 = 7/21 = (7x2)/((21x2) = 14/42 = 14:42

You can multiply both numerator and denominator with any number you wish but if you're opting for division, then you have to make sure that the umber you choose to divide the numerator and denominator is a factor of both of them. That is, if the given ratio is in its standard (lowest) form, you can't divide to get an equivalent ratio.