Answer:
35.5 i'm pretty sure
Step-by-step explanation:
because 9 times 7 is 63. 63 plus 8 is 71 and 71/2 is 35.5
31
c. -51 i know bc i used a math app and it is always right
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57n - 40
1. Distribute number before parantheses
2. Combine like terms
