проверь,верны ли равенства:
13*(10+2)=13*10+13*2 (20+5)*4=20+5*4
15*(10+2)=15*10*2 72:(8*3)=72:8*3
13*(10+2)=13*10+13*2 (20+5)*4=20+5*4
15*(10+2)=15*10*2 72:(8*3)=72:8*3
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13*(12) = 130 + 26
156 = 156
Верно
(20+5)*4=20+5*4
25 * 4 = 20 + 20
100 = 40
Неверно
15*(10+2)=15*10*2
15*12 = 300
180 = 300
Неверно
72:(8*3)=72:8*3
72:24 = 72:24
3 = 3
Верно