Question

вычислите.
47*42+42*153
61*45+55*61
57*81-71*57
39*138-137*39

Answer 1

47*42+42*153=8400

61*45+55*61=6100

57*81-71*57=570

39*138-137*39=39

Answer 2

71*57=4047

Answer 3

4617-4047=570

Answer 4

39*138=5382

Answer 5

137*39=5343

Answer 6

5382-5343=39