To make ribbon and bow for a hat, stacey needs 5/6 yard of black ribbon and 2/3 yard of red ribbon. how much total ribbon does she need.

1  1/2

Step-by-step explanation: 5/6 + 2/3 = ?  3- 3,6   6- 6  so the  six will be the denominators because is the less common number so 5/6 + 2/3 = 5/6 + 4/6 = 9/6 which can be simplify by the factor 3 which will be 3/2 or 1  1/2 .

thats not a system of equations, that is a solution

6e14 is the answer.