1/5*27+3/5*41怎么简算

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1/5*27+3/5*41怎么简算
1/5*27+3/5*41怎么简算

1/5*27+3/5*41怎么简算
1/5*27+3/5*41
=1/5*(25+2)+3/5*(40+1)
=5+2/5+24+3/5
=29+1=30

1/5*27+3/5*41
=1/5(27+123)
=1/5*150
=30

原式=1/5(27+3*41)
=1/5*150
=30

1/5*27+3/5*41
=27/5+123/5
=(27+123)*1/5
=150*1/5
=150/5
=30

1/5*27+3/5*41
=1/5*(27+3+41)
=1/5*150
=30