Найдите значение выражения используя свойства сложения и умножения:
a) 56+ 83 + 15 +17 + 24 =
6) 20 - 12 * 5 * 8=
B) (300+ 5) * 30 =
B) 8 * 19 +8 * 21 =
Г) 11 * 37-7 * 11 =
Д) 31*24+31*27-51*28=
Е) 75*12=​
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