3x:64=78:4x:35=25:74x-65=3x-142x+1=13xx:6=3:335320:180%=6.5xx:8=35:115(3x-5):(x-13)=3:249:x=0.5:912:x=21.510:x=412:4519:5710=60%:x34:x=516:14x24=0.53(47x):23-六年级数学
(7)x:8=
3 |
5 |
1 |
5 |
1
1 |
5 |
3 |
5 |
1
1 |
5 |
1 |
5 |
24 |
5 |
1 |
5 |
x=4;
(8)(3x-5):(x-
1 |
3 |
6x-10=3x-1,
6x-10+10=3x-1+10,
6x-3x=3x+9-3x,
3x÷3=9÷3,
x=3;
(9)
4 |
9 |
0.5x=
4 |
9 |
0.5x÷0.5=4÷0.5,
x=8;
(10)12:x=
2 |
1.5 |
2x=12×1.5,
2x÷2=18÷2,
x=9;
(11)10:x=4
1 |
2 |
4 |
5 |
4
1 |
2 |
4 |
5 |
4
1 |
2 |
1 |
2 |
1 |
2 |
x=1
7 |
9 |
(12)19:5
7 |
10 |
19x=5
7 |
10 |
19x÷19=
57 |
25 |
x=