Question

If 1 + 4 = 9, 2+ 8 = 18 and 3+ 6 = 15, then 7 + 8 is equal to​

Answer 1

Step-by-step explanation:

$1 + 4 \times 2 = 9 \\ 28 \times \times 2 = 18 \\ 3 + 6 \times 2 = 15 \\ 7 + 8 \times 2 = 23$

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Answer 2

The answer is 23

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