Kendra’s work is shown in the table. where, if anywhere, did kendra first make a mistake? steps kendra’s work step 1 negative 3 x + 7 y = negative 15. negative 2 x minus 7 y = 5. negative 5 x = negative 10. step 2 negative 5 x = negative 10. x = 2. step 3 negative 3 (2) + 7 y = negative 15. negative 6 + 7 y = negative 15. 7 y = negative 9. y = negative startfraction 9 over 7 endfraction = negative 1 and startfraction 2 over 7 endfraction