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Please help me. I don't understand the last question, so can you guys help me

Please help me. I don't understand the last question, so can you guys help me-example-1

2 Answers

5 votes
The answer to this question is = 20
User Tenten
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5 votes

Answer:

144+42=186-126=60+25=85-65=20

the elevation at the brook is 20

User Taimur Aziz
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