find the equivalent fractions by using multiplication. Then solve addition problem on right substituting equivalent fraction with the common denominator

find the equivalent fractions by using multiplication Then solve addition problem on right substituting equivalent fraction with the common denominator class=

Respuesta :

first one: 3/4 = __/8 

to get 8, they did 4*2 
so whatever you do to the bottom, you do to the top
3*2=6 
the first answer is - 3/4 = 6/8

the second one: 3/8 + 3/4 
we need to find the LCD (Lowest Common Denominator) 
 3/8 = 8,16,
3/4= 4,8

the LCD is 8, now we just need to add the numerators 

3/8 + 3/8 = 9/8

we could covert it into a mixed fraction 

9/8 = 1 1/8

i hope this helped!!