题目在下面,是解方程,求得数和过程.3Ⅹ+2.5×4=24.7 1/2Ⅹ-0.25Ⅹ=8 Ⅹ+7/8Ⅹ=3/4 28/Ⅹ=0.4/0.1= = = = = = = = = = = = 1/10:Ⅹ=1/8:1/4 2/3Ⅹ+3/4Ⅹ=1/6= = = = = =
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题目在下面,是解方程,求得数和过程.3Ⅹ+2.5×4=24.7 1/2Ⅹ-0.25Ⅹ=8 Ⅹ+7/8Ⅹ=3/4 28/Ⅹ=0.4/0.1= = = = = = = = = = = = 1/10:Ⅹ=1/8:1/4 2/3Ⅹ+3/4Ⅹ=1/6= = = = = =
题目在下面,是解方程,求得数和过程.
3Ⅹ+2.5×4=24.7 1/2Ⅹ-0.25Ⅹ=8 Ⅹ+7/8Ⅹ=3/4 28/Ⅹ=0.4/0.1
= = = =
= = = =
= = = =
1/10:Ⅹ=1/8:1/4 2/3Ⅹ+3/4Ⅹ=1/6
= =
= =
= =
题目在下面,是解方程,求得数和过程.3Ⅹ+2.5×4=24.7 1/2Ⅹ-0.25Ⅹ=8 Ⅹ+7/8Ⅹ=3/4 28/Ⅹ=0.4/0.1= = = = = = = = = = = = 1/10:Ⅹ=1/8:1/4 2/3Ⅹ+3/4Ⅹ=1/6= = = = = =
3x+2.5×4=24.7
x =(24.7-2.5×4)/3
x=(24.7-10)/3
x =14.7/3
x=4.9
1/2Ⅹ-0.25Ⅹ=8
0.75x=8
x=8×3/4
x=6
Ⅹ+7/8Ⅹ=3/4
15/8x=3/4
x=3/4×8/15
x=2/5
28/Ⅹ=0.4/0.1
x=4/28=7
1/10:Ⅹ=1/8:1/4
x=1/10×2
x=1/5
2/3Ⅹ+3/4Ⅹ=1/6
13/12x=1/6
x=1/6×12/13
x=2/13
1.3X+10=24.7 3X=24.7-10 3X=14.7 X=4.9
2. 0.5X-0.25X=8 0.25X=8 X=32
3. 等式两边同时乘以8得:8X+7X=6 15X=6 X=6/15=2/5
4. 0.4X=28*0.1 X=7
5. 1/8X=1/10*1/4 1/8X=1/40 X=1/5
6. 等式两边同时乘以12得:8X+9X=2 17X=2 X=2/17