给4道解比例,帮我解.1/2:1/3=1/4:x (6+x):4=9:50.75/x=3/240%/x=120%/2
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/15 05:31:23
给4道解比例,帮我解.1/2:1/3=1/4:x (6+x):4=9:50.75/x=3/240%/x=120%/2
给4道解比例,帮我解.
1/2:1/3=1/4:x
(6+x):4=9:5
0.75/x=3/2
40%/x=120%/2
给4道解比例,帮我解.1/2:1/3=1/4:x (6+x):4=9:50.75/x=3/240%/x=120%/2
你好
1/2:1/3=1/4:x
1/2x=1/3*1/4=1/12
x=1/6
(6+x):4=9:5
5(6+x)=4*9
30+5x=36
5x=6
x=6/5
0.75/x=3/2
3x=0.75*2
3x=1.5
x=0.5
40%/x=120%/2
120%x=40%*2
x=80/120
x=2/3
数学辅导团为您解答,不理解请追问,理解请及时选为满意回答!(*^__^*)谢谢!
第1题 x=6
1/2:1/3=1/4:x
1/2x=1/3×1/4
X=1/6
(6+x):4=9:5
30+5X=36
5X=6
X=6/5
0.75/x=3/2
3X=0.75×2
X=0.5
40%/x=120%/2
1.2X=0.8
X=2/3
1/2:1/3=1/4:1/6
x=6/5
x=1/2
x=2/3
1/2:1/3=1/4:x
1/2x=1/3×1/4
x=1/12÷1/2
x=1/6
(6+x):4=9:5
5(6+x)=4×9
6+x=36÷5
x=7.2-6
x=1.2
0.75/x=3/2
3x=0.75×2
x=1.5÷3
x=0.5
40%/x=120%/2
120%x=40%×2
x=0.8÷1.2
x=2/3
1/3×1/4=1/2×X
X=1/6
5(6 X)=4×9
30 5X=36
X=6/5
3X=2×0.75
X=1/2
120/100X=40/100×2
X=2/3