设书店共购回这种童话书x本.
24%x + 24%x -14 = 66
48%x -14 = 66
48%x -14 +14 = 66 +14
48%x =80
48%x ÷ 48% =80 ÷ 48%
x =
——
66+14=80(本)
24%+24%=48%
1-48%=52%
80÷52%=
————
你看,我列了两种算法,但是,答案好像都算不出来,你再看一看题好吗?
设书店共购回这种童话书x本.
24%x + 24%x -14 = 66
48%x -14 = 66
48%x -14 +14 = 66 +14
48%x =80
48%x ÷ 48% =80 ÷ 48%
x =
——
66+14=80(本)
24%+24%=48%
1-48%=52%
80÷52%=
————
你看,我列了两种算法,但是,答案好像都算不出来,你再看一看题好吗?