What is the solution to this equation : 1/21x = 1/7

x = 3

x = 14

x = 28

x = 147

An alien has just landed from the planet, iksnimak. he would like to leam how to add two fractions when thedenominators are the same. write a paragraph that explains to our alien friend, in your own words, the detailsabout how to add the fractions, how to change the result to a mixed number, and how to reduce the fractionpart. use this problem as your example: the two fractions are 5/8 & 7/8

Hi my sisters and brothers can tell me the answer because i don’t understand the question

In a class, there are 12 girls. if the ratio of boys to girls is 5: 4 how many boys are there in the class