Answer:
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<span>In preparation for the practice, Jordan's mother purchased 7 packs of juice, each with 8 boxes. Thus the total juice inventory prior to the practice was 7*8 = 56 boxes. Since the team drank all but 29 boxes during the practice, the amount that was consumed can be found as 56 - 29 = 27 boxes.</span>
Add -2 on the both sides
x+2-2=9-2
x=7