464. Выполните сложение: 161 1) 3175 + 53 13 25 +18 23 24 34 35 37 3) 78- +39. +14. 48 15 16 ; 2) 921+ 30. +18 25 15 21 40 64 75 59 4) 304 +99- +14 80 127 160
помогите пожалуйста, времени мало:(​
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