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КИРилЛ132200310
@КИРилЛ132200310
July 2022
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Вычислите рациональным способом: 3,2×2+2,8×11+3,2×5-2,8×4
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NRGbrony
3,2×2+2,8×11+3,2×5-2,8×4=
=(3.2×2+3,2×5)+(2,8×11-2,8×4)=
=3,2×(2+5)+2,8×(11-4)=3,2×7+2,8×7=(3,2+2,8)×7= 6×7=42
0 votes
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КИРилЛ132200310
Большое спасибо).
nafanya2014
На втором шаге неточность: 3,2×(2+5)+2,8×(11-4)
nafanya2014
Verified answer
3,2×2+2,8×11+3,2×5-2,8×4=3,2×(2+7)+2,8×(11-4)=3,2×7+2,8×7=(3,2+2,8)×7= 6×7=42
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Thanks 1
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Answers & Comments
=(3.2×2+3,2×5)+(2,8×11-2,8×4)=
=3,2×(2+5)+2,8×(11-4)=3,2×7+2,8×7=(3,2+2,8)×7= 6×7=42
Verified answer
3,2×2+2,8×11+3,2×5-2,8×4=3,2×(2+7)+2,8×(11-4)=3,2×7+2,8×7=(3,2+2,8)×7= 6×7=42