计算(能够简算的要简算)5400-2940÷28389×42.7+389×57.3(19+127)÷4+23271÷(0.75+13)×132413+38+23+58.-数学
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答案
(1)5400-2940÷28, =5400-105, =5400-(100+5), =5400-100-5, =5295; (2)389×42.7+389×57.3, =389×(42.7+57.3), =389×100, =38900; (3)(
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