Question

4-2=8
7-3=21
6-3=9
then
9-4=?

Answer 1

HEY MATE HERE IS YOUR ANSWER

$4 - 2 = 8 \\ 4 = 10 \\ 9 = 6 - 3 \\ substitute \: in \: 9 - 4 \\ 6 - 3 - 10 \\ -9 - 4 = - 7$


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