Ответ:(10+8)x12=20x12=240
(98-9)x17=89x17=1513
76x(148+52)=76x200=15200
(971-52)x5=919x5=4595
9x(785+54)=9x839=7551
8x(452+448)=8x900=7200
2
39x28+39x72=1092+2808=3900
51x2-23x2=102-46=56
868x55+768x55=47740+42240=89980
11x9-9x23=99-207=-108
48x308+40x308=14784+12320=27104
23x17+4x67=391+268=659
3
19x12+81x12=228+972=1200
198x16-98x16=3168-1568=1600
73x81+27x81=5913+2187=8100
945x45-935x45=42525-42075=450
Пошаговое объяснение:
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Ответ:(10+8)x12=20x12=240
(98-9)x17=89x17=1513
76x(148+52)=76x200=15200
(971-52)x5=919x5=4595
9x(785+54)=9x839=7551
8x(452+448)=8x900=7200
2
39x28+39x72=1092+2808=3900
51x2-23x2=102-46=56
868x55+768x55=47740+42240=89980
11x9-9x23=99-207=-108
48x308+40x308=14784+12320=27104
23x17+4x67=391+268=659
3
19x12+81x12=228+972=1200
198x16-98x16=3168-1568=1600
73x81+27x81=5913+2187=8100
945x45-935x45=42525-42075=450
Пошаговое объяснение: