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36+21:7+15
64-35:5-32
36:4+9x3
27:3+81:9


Răspuns :


36+21÷7-15=36+3-15=39-15=24

64-35÷5-32=64-7-32=57-32=25

36÷4+9·3=9+27=36

27÷3+81÷9=9+9=18