3/6 + 1/3 is equivalent to

3/6+1/3=

Step-by-step explanation:

3/6 + 2/6= 5/6

9/18 + 6/18= 15/18 which is the same as 5/6 if you divide by 3

c.

step-by-step explanation:

she should of added 9^2 and 12^2. that is because it is a^2+b^2=c^2. c^2 is the hypotenuse and should always be bigger than the other two numbers. which is why she should of added 9 squared and 12 squared together instead of 15 squared.