Question

71+7=42, 52+2=27, 21+3=12, 15+5=?

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Answer 1

Answer:

15+5=20

20÷2=10

10 is your question's answer.

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Answer 2

Answer:

10

Step-by-step explanation:

because if we add 5 in 15 the answer is 20 then divide it by 2

simply take one more example

21 + 3=24 divide it by 2 the answer is 12

hope it help