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polina200308
@polina200308
November 2021
1
11
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в) 51*78-51*58
г)63*7-7*33
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laymlaym2
Вынесем общий множитель:
в)51*78-51*58=51*(78-58)=51*20=1020
г)63*7-7*33=7*(63-33)=7*30=210
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в)51*78-51*58=51*(78-58)=51*20=1020
г)63*7-7*33=7*(63-33)=7*30=210