make each fraction equivalent to one-half
7/? = ?/42

Question

make each fraction equivalent to one-half 
7/? = ?/42

anonymous · Answer

numerically what does one-half look like?

anonymous · Answer

1/2

anonymous · Answer

7/? =7/14   because 7/7=1 and 14/7=2 so it would be 1/2 


?/42 is 42divided by 2  and u get 21 so it is 21/42 because 21 is 1/2 of 42

anonymous · Answer

so what i would do now is say i have 1/2 right? i know the top part of the first one is 7 right? So what if multiplied the top and bottom by 7?

anonymous · Answer

what would that look like if i did that?

anonymous · Answer

1 7/7=1

anonymous · Answer

no no $$7/?= 1/2 $$

 you divide both top and bottom by 7  and get 1/2

$$?/42 =1/2$$

$$42/2$$ (to get 2 parts for the 1/2)

$$?/42=21/42 $$ because 21 is 1/2 of 42

anonymous · Answer

OOOOH I get it. You Divided by 2 cause of half

anonymous · Answer

yes exactly sorry for making it sound so difficult

anonymous · Answer

so you had the right idea you went 1 x 7 right but to make it so you multiply by 1 and dont change the problem you should multiply by 7/7 so whats 1/2 * 7/7?

anonymous · Answer

7/14= 1/2*7/7

anonymous · Answer

good so what about using that method to do the other one?

anonymous · Answer

21/42  since you dont have the numerator in this problem 
you MUST divide the denominator by 2 to get 2 halves and 42/2= 21 so 21 is 1/2 of 42