Предмет: Математика, автор: yanarutodattebae

поооомммоооогггиитттттеееееее

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Ответы

Автор ответа: sergunovaarina127

Ответ:

а)71730

б)53534

в)7312

а)30039

б)на 9028

Р=166 см;

АВ=62 см;

АС=АВ-14=62-14=48 см;

ВС-?;

ВС=166-62-48=56 см;

48+ 53; 42 + 48; 42+ 31; 31 + 18.

307 - 38 = 269 кг моркови продали во вторник

307 + 59 = 366 кг моркови продали в среду

307 + 269 + 366 = 942 кг моркови продали за три дня

Ответ: 942 кг моркови продали за три дня

Пусть а -первое из трёх послед.натуральных чисел, тогда

а + (а+1)+(а+2) = 480

откроем скобки и воспользуемся законами сложения

а+а+а+1+2=480

3а+3=480

3(а+1)=480

а+1=160

а=159 -первое число

160- второе число

161-третье искомое число

(159+160+161=480 -проверка)

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