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X÷5/7=3/8

X÷5/7=3/8 解:原方程即: x=5/7*3/8 x=15/56

X+3/5=8 解:X=8-3/5 X=7又2/5 3/8+5/7÷2/7 =3/8+5/2 =2又7/8 3/8+5/7x1/5 =3/8+1/7 =29/56

x+(3/8+2/5)=7/8 x=7/8-3/8-2/5 x=1/2-2/5 x=1/10

x=5/8✘3✘7/5=21/8

(5/7-3/8)÷1/56 =(5/7-3/8)x56 =5/7x56-3/8x56 =40-21 =19 , 你好,本题已解答,如果满意 请点右下角“采纳答案”。

x-5/7=3/8 x=5/7+3/8 x=40/56+21/56 x=61/56

3/4÷7/8÷7/15 =3/4×8/7×15/7 =6/7×15/7 =90/49 5/12÷7/12×7/9 =5/12×12/7×7/9 =5/7×7/9 =5/9 24÷16/3×3/8 =24×3/16×3/8 =9/2×3/8 =27/16 2/3×18÷7/4 =12×4/7 =48/7 4/7x=28 解:x=28÷4/7 x=28×7/4 x=49 x÷2/9=6/7 解:x=6/7×2/9 x=4/21

2/3X÷4/5=3/8 2/3X=3/8×4/5 2/3X=3/10 X=3/10÷2/3 X=9/20 X÷3/14=7/6 X=7/6×3/14 X=1/4

56X(4/7+5/8-3/4) 解,得: ==(4/7)X56+(5/8)X56-(3/4)X56 ==32+35-42 ==67-42 ==25

解: X÷5/6=30 X=30×5/6 X=25 3/5X-1/4X=7 (12-5)X=280 X=280÷7 X=40 8/11:10=4/5:X X=10×4/5÷8/11 X=11 X:28%=1又3/4:0.7 0.7X=0.49 X=0.7 1/2+1/3X=10 1/3X=9.5 X=9.5×3 X=28.5 486-23x16=486-368=118 97x97/98=(98-1)×97/98=97-97/98...

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