题目在下面,是解方程,求得数和过程.
问题描述：
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
= =
= =
= =
答
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那个第一题 /3是什么意思?那个第一题 /3是什么意思?除以3