两村合挖一条水渠,甲挖全长的4分之1多66米,乙村挖的是甲的2分之1,正好挖完,这条水全长多少?
设这条水渠全长为X米 [(1/4)*X 66] [(1/4)*X 66]*(1/2)=X [(1/4)*X 66]*(3/2)=X (1/4)X 66=(2/3)X (5/12)X=66 X=158.4 这条水渠全长为158.4米
设这条水渠全长为X米 [(1/4)*X 66] [(1/4)*X 66]*(1/2)=X [(1/4)*X 66]*(3/2)=X (1/4)X 66=(2/3)X (5/12)X=66 X=158.4 这条水渠全长为158.4米收起