解方程或比例.1+0.6x=9.5 ...
解方程或比例.1+0.6x=9.5x-0.25=1234x+16x=6636x=5431.25:0.25=x:2.434:56=14:x....
解方程或比例.1+0.6x=9.5 x-0.25=12 34x+16x=66 36x=543 1.25:0.25=x:2.4 34:56=14:x.
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(1)1+0.6x=9.5,
1+0.6x-1=9.5-1,
0.6x÷0.6=8.5÷0.6,
x=14
;
(2)x-0.25=
,
x-0.25+0.25=
+0.25,
x=0.75;
(3)
x+
x=66,
x=66,
x×
=66×
,
x=72;
(4)
=
,
54x=36×3,
54x÷54=108÷54,
x=2;
(5)1.25:0.25=x:2.4,
0.25x=1.25×2.4,
0.25x÷0.25=3÷0.25,
x=12;
(6)
:
=
:x
x=
×
,
x×
=
×
,
x=
.
1+0.6x-1=9.5-1,
0.6x÷0.6=8.5÷0.6,
x=14
1 |
6 |
(2)x-0.25=
1 |
2 |
x-0.25+0.25=
1 |
2 |
x=0.75;
(3)
3 |
4 |
1 |
6 |
11 |
12 |
11 |
12 |
12 |
11 |
12 |
11 |
x=72;
(4)
36 |
x |
54 |
3 |
54x=36×3,
54x÷54=108÷54,
x=2;
(5)1.25:0.25=x:2.4,
0.25x=1.25×2.4,
0.25x÷0.25=3÷0.25,
x=12;
(6)
3 |
4 |
5 |
6 |
1 |
4 |
3 |
4 |
5 |
6 |
1 |
4 |
3 |
4 |
4 |
3 |
5 |
24 |
4 |
3 |
x=
5 |
18 |
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