题目内容
解比例
6x=107 |
|
15:3=12:x | ||||
22.4x=23 |
|
12.5:2.5=8x. |
(1)6x=107,
6x=107÷6,
x=17
;
(2)
=
,
9x=9.6×0.6,
9x÷9=5.76÷9,
x=0.64;
(3)15:3=12:x,
15x=3×12,
15x÷15=36÷15,
x=2.4;
(4)22.4x=23,
22.4x÷22.4=23÷22.4,
x=1
;
(5)
=
,
0.4x=0.5×0.6,
0.4x÷0.4=0.3÷0.4,
x=0.75;
(6)12.5:2.5=8x,
20x=12.5,
20x÷20=12.5÷20,
x=0.625.
6x=107÷6,
x=17
5 |
6 |
(2)
9.6 |
x |
9 |
0.6 |
9x=9.6×0.6,
9x÷9=5.76÷9,
x=0.64;
(3)15:3=12:x,
15x=3×12,
15x÷15=36÷15,
x=2.4;
(4)22.4x=23,
22.4x÷22.4=23÷22.4,
x=1
3 |
112 |
(5)
0.5 |
0.4 |
x |
0.6 |
0.4x=0.5×0.6,
0.4x÷0.4=0.3÷0.4,
x=0.75;
(6)12.5:2.5=8x,
20x=12.5,
20x÷20=12.5÷20,
x=0.625.
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