Выполни действие 92•(40+7)=92•40+92•7=4324 102•(43+17)=102•60=6120 421•23+421•7=421•30=12630 105•44+105•6= 17•74+16•17=

Выполним действия:1) 92 • (40 + 7) = 92 • 40 + 92 • 7 = 90 * 40 + 2 * 40 + 90 * 7 + 2 * 7 = 3 600 + 80 + 630 + 12 = 3 300 + 10 + 12 = 4324;2) 102 • (43 + 17) = 102 • 60 = 100 * 60 + 2 * 60 = 6 000 + 120 = 6120;3) 421 • 23 + 421 • 7 = 421 * (23 + 7) = 421 • 30 = 400 * 30 + 20 * 30 + 1 * 30 = 12 000 + 600 + 30 = 12 600 + 30 = 12 630;4) 105 • 44 + 105 • 6 = 105 * (44 + 6) = 105 * 50 = 100 * 50 + 5 * 50 = 5 000 + 250 = 5 250;5) 17 • 74 + 16 • 17 = 17 * (74 + 16) = 17 * (80 + 10) = 17 * 90 = 10 * 90 + 7 * 90 = 90 + 630 = 1000 + 530 = 1 530.