被除數(shù),除數(shù),商和余數(shù)的和是156,已知商是4,余數(shù)是1,那么被除數(shù)+除數(shù)=156-4-1=151①
因?yàn)楸怀龜?shù)=除數(shù)×商+余數(shù)
即被除數(shù)=除數(shù)×4+1代入①中得除數(shù)×4+1+除數(shù)=151
解得除數(shù)=30
所以被除數(shù)=151-30=121即被除數(shù)=除數(shù)×4+1代入①中得除數(shù)×4+1+除數(shù)=151解得除數(shù)=30請(qǐng)問(wèn)下這步是怎么詳解就是①中的被除數(shù)用（除數(shù)×4+1）來(lái)代替即被除數(shù)=除數(shù)×4+1代入①中得（除數(shù)×4+1）+除數(shù)=151除數(shù)×5+1=151除數(shù)×5=150所以除數(shù)=30