156-47-53
=156-(47+53)
=156-100
=56
(5000+3500+2000)÷(1+2+7)
=10500÷10
=1050(元)
五
156-47-53=156-(47+53)=156-100=56
六
=(5000+3500x2+2000X7)/(1+2+7)
=(5000+7000+14000)/10
=500+700+1400
=2600
第二道题,加起来除以3是3500
156-47-53
=156-(47+53)
=156-100
=56
(5000+3500×2+2000×7)÷(1+2+7)
=26000÷10
=2600(元)
=156-(47+53)
=156-100
=56