38 - 47-9=, 74 - 46+28=, 5 - 26-21=, 80 - 97-17=, 57 - 54+3=, 34 - 60-26=, 6 - 18-12=, 42 - 23+19=, 64 - 22+42=, 26 - 11+15=,

multi-digit addition subtraction

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