Which equation results from adding the equations in this system?

x + 6 y = 9. Negative x + 2 y = negative 15.
8 y = negative 6
8 y = 6
4 y = 24
4 y = negative 6

0/5 is 0, 2/0 is undefined, and 0/0 is indeterminate.

step-by-step explanation:

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  or  

step-by-step explanation:

if the four friends split the cost, p, of the pizza evenly, then each friend pays one-fourth of the cost of the pizza.

the expression is   or