解方程:3/4x+0.5×0.75=1 1.5×1/2+0.5x=15/4

来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/19 20:15:22
解方程:3/4x+0.5×0.75=11.5×1/2+0.5x=15/4解方程:3/4x+0.5×0.75=11.5×1/2+0.5x=15/4解方程:3/4x+0.5×0.75=11.5×1/2+0

解方程:3/4x+0.5×0.75=1 1.5×1/2+0.5x=15/4
解方程:3/4x+0.5×0.75=1 1.5×1/2+0.5x=15/4

解方程:3/4x+0.5×0.75=1 1.5×1/2+0.5x=15/4
3/4x+0.5×0.75=1
3/4x+3/8=1
3/4x=1-3/8
3/4x=5/8
x=5/8÷3/4
x=5/6
1.5×1/2+0.5x=15/4
3/4+0.5x=15/4
0.5x=15/4-3/4
0.5x=3
x=3÷0.5
x=6

3/4x+0.5×0.75=1
两边同乘以8,得
6x+3=8
6x=5
x=5/6
1.5×1/2+0.5x=15/4
两边同乘以4,得
3+2x=15
2x=12
x=6

4×0.5×3 = 6.7
4×1.5 = 6.7
4倍= 5.2
X = 1.3

5倍 - 3.3 = 7.3
5倍= 10.6
X = 2.12

1.7-0.7X = 20
0.7倍= -18.3
x≈-26.14

的x 4.5 + 5.5 = 15
X +1 = 15
X = 14