14.3×7.88-9.7×7.38+1.43×21.2-97×0.262≡
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14.3*7.88-9.7*7.38+1.43*21.2-97*2.62
=1.43*78.8+1.43*21.2-9.7*7.38-9.7*2.62
=4.53*(78.8+21.2)-9.7*(7.38+2.62)
=4.53*100-9.7*10
=453-97
=356
=1.43*78.8+1.43*21.2-9.7*7.38-9.7*2.62
=4.53*(78.8+21.2)-9.7*(7.38+2.62)
=4.53*100-9.7*10
=453-97
=356
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是不是没算对呀
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对不起,我把那个1.43写错成4.53了
14.3*7.88-9.7*7.38+1.43*21.2-97*2.62
=1.43*78.8+1.43*21.2-9.7*7.38-9.7*2.62
=1.43*(78.8+21.2)-9.7*(7.38+2.62)
=1.43*100-9.7*10
=143-97
=46
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