Write a proof for the conjecture using the contrapositive.
If 5x + 7 = -13, then x = -4.
1 answer:
Answer:
ans x=4
Step-by-step explanation:
- 5x + 7 = -13
- 5x = -13 -7
- 5x= -20
- x = -20/5
- x = -4
- so the answer is x= -4
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