Write equivalent fractions for 3/7 and 1/3 using 21 as the common denominator so what is 3/7+1/3 equals blank over 21+ blank over 21
To find equivalent fractions for 3/7 and 1/3 with a common denominator of 21, we need to scale the fractions accordingly.
For 3/7:
Multiplying both the numerator and denominator by 3 gives: (3*3)/(7*3) = 9/21
For 1/3:
Multiplying both the numerator and denominator by 7 gives: (1*7)/(3*7) = 7/21
Now, to find 3/7 + 1/3, we add the fractions with the same denominator:
(9/21) + (7/21) = (9 + 7) / 21 = 16/21
Therefore, 3/7 + 1/3 is equal to 16/21.