0.79x0.46+7.9x0.24+11.4x0.079简便运算怎么做
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=0.79×0.46+0.79×2.4+1.14×0.79
=0.79×(0.46+2.4+1.14)
=0.79×4
=3.16
=0.79×(0.46+2.4+1.14)
=0.79×4
=3.16
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