15.6\4/9+22/5*2.25简算
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15.6\4/9+22/5*2.25简算15.6\4/9+22/5*2.25简算15.6\4/9+22/5*2.25简算15.6\4/9+22/5*2.25=15.6×9／4＋4·4×9／4=9／4×
15.6\4/9+22/5*2.25简算
15.6\4/9+22/5*2.25简算
15.6\4/9+22/5*2.25简算
15.6\4/9+22/5*2.25
=15.6×9／4＋4·4×9／4
=9／4×(15.6＋4·4)
=9／4×20
=45