Математика 53+?=64 64-53=? 53+?=64

Question

Математика
53+?=64
64-53=?
53+?=64

Answer 1

?=64-53=11
?=64-53=11
?=64-53=11
53+11=64
64-53=11
53+11=64

Answer 2

64-53=11
53+11=64
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64-53=11
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53+11=64