Ответы на вопрос:
70*20+70*30=70*(20+130)=70*150=3500
150*100+250*100=100*(150+250)=100*350=35000
910*17+17*90=17*(910+90)=17*1000=17000
70*20+70*130=70(20+130)=70*150=10 500
150*100+250*100= 100(150+250)=100*400=40 000
910*17+17*90=17(910+90)=17*1000=17 000
(60 - 16 : 4) : 8 * 40 - (80 * 8 - 20 * 5) : 6 = 190 1) 16 : 4 = 4 2) 60 - 4 = 56 3) 80 * 8 = 640 4) 20 * 5 = 100 5) 640 - 100 = 540 6) 56 : 8 = 7 7) 7 * 40 = 280 8) 540 : 6 = 90 9) 280 - 90 = 190
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