Read the question carefully and solve the problem. show your mathematical thinking and record your final solution. show that the sum of 2 rational numbers is rational.

1/3+1/9= 4/9, which is a rational number. 1/3 is equal to 0.333333, which is equivalent to 1/3, while 1/9 is equal to 0.1111111. By adding we get 0.44444444, which is equal to 4/9.