13×5/12＋4又3/5×10=1212121212/2323232323=(约分)4又3/4×1.36×3/8÷4.75÷1又9/25÷0.375=0.75×2.84÷3又3/5÷(1又1/2×1.42)×1.8=1×2×4＋2×4×8＋3×6×12/1×3×6＋2×6×12＋3×9×18=(1又1/1995×3.6＋3又3/5×8又1994/1995)÷9又3/5÷3

Question

13×5/12＋4又3/5×10=
1212121212/2323232323=(约分)
4又3/4×1.36×3/8÷4.75÷1又9/25÷0.375=
0.75×2.84÷3又3/5÷(1又1/2×1.42)×1.8=
1×2×4＋2×4×8＋3×6×12/1×3×6＋2×6×12＋3×9×18=
(1又1/1995×3.6＋3又3/5×8又1994/1995)÷9又3/5÷3又3/4=

Answer 1

13×5/12＋4又3/5×10
=13×5/12＋23/5×10
=65/12+230/5
=325/60+2760/60
=3085/60
=617/12
1212121212/2323232323=(约分)
=(12×101010101)/(23×101010101)
=12/23
4又3/4×1.36×3/8÷4.75÷1又9/25÷0.375
=19/4×34/25×3/8÷19/4÷34/25÷3/8
=19/4×34/25×4/19×25/34
=1
0.75×2.84÷3又3/5÷(1又1/2×1.42)×1.8
=3/4×71/25÷18/5÷(3/2×71/50)×9/5
=3/4×71/25×5/18÷213/100×9/5
=3/4×71/25×5/18×100/213×9/5
=1/2
1×2×4＋2×4×8＋3×6×12/1×3×6＋2×6×12＋3×9×18
=8+64+12+144+486
=714
(1又1/1995×3.6＋3又3/5×8又1994/1995)÷9又3/5÷3又3/4
=(1又1/1995×18/5+18/5×8又1994/1995)÷48/5÷15/4
=[18/5×(1又1/1995+8又1994/1995)]×5/48×4/15
=(18/5×10)×5/48×4/15
=36×5/48×4/15
=1