4/7×23又12/13+1/7×1/13+16×1/7简便计算
问题描述:
4/7×23又12/13+1/7×1/13+16×1/7简便计算
答
4/7×23又12/13+1/7×1/13+16×1/7
=(4/7+1/7+1/7)+23+(12/13+1/13)
=6/7+23+1
=24又6/7你答案里还差个数没算...4/7×23又12/13+1/7×1/13+16×1/7=1/7×[4×(23+12/13)+1/13+16]=1/7×[92+48/13+1/13+16]=1/7×[108+49/13]=15+3/7+3+10/13=18+39/91+70/91=18+109/91=19+18/91=19又18/91