Question

Whats 3/5 + 5/9 (fraction) and 4/7 - 2/3

Answer 1

if you want to calculate 3/5 + 5/9, you have to bring them to a common denominator; you do it by multiplying the nominator and denominator of both by the other denominator:


`(3)/(5) + (5)/(9) = (3*9)/(5*9) + (5*5)/(9*5)= (27+25)/(5*9) = (52)/(45) =1 (7)/(45)`


`(12)/(21) - (14)/(21) =-1 (2)/(21)`