If you want me to solve for "Y" then, the answer will be,

ir if you want me to solve for "X" instead then the answer will be,

Step-by-step explanation:
6. 7x + 7y = -11
7. -1x + 8y = 12
8. 9x + 11y = -7
Let w = the number of weeks you talked on your cell phone
60 min = 1 hr
60w + 250 = total number of minutes