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x+37x=18x×(16+38)=1312x2=0.751.25,5:8=20:x17-120%x=534:x=19:2.

题目详情
x+
3
7
x=18
x×( 
1
6
+
3
8
)=
13
12
x
2
=
0.75
1.25
5:8=20:x 17-120%x=5
3
4
:x=
1
9
:2.
x+
3
7
x=18
x×( 
1
6
+
3
8
)=
13
12
x
2
=
0.75
1.25
5:8=20:x 17-120%x=5
3
4
:x=
1
9
:2.
x+
3
7
x=18
x×( 
1
6
+
3
8
)=
13
12
x
2
=
0.75
1.25
x+
3
7
x=18
3
7
x=18
3
7
3377x×( 
1
6
+
3
8
)=
13
12
1
6
+
3
8
)=
13
12
1
6
1166
3
8
)=
13
12
3
8
3388
13
12
13
12
13131212
x
2
=
0.75
1.25
x
2
=
0.75
1.25
x
2
xx22
0.75
1.25
0.75
1.25
0.750.751.251.25 5:8=20:x 17-120%x=5
3
4
:x=
1
9
:2.
5:8=20:x17-120%x=5
3
4
:x=
1
9
:2.
3
4
:x=
1
9
:2.
3
4
3344
1
9
:2.
1
9
1199
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答案和解析
(1)x+37x=18,          107x=18,             x=18×710,        ...