求未知数x.716:x=78:329 23x+12x-23=0.5&nb...
求未知数x.716:x=78:32923x+12x-23=0.535(x-10)=(8-85x)...
求未知数x.716:x=78:329 23x+12x-23=0.5 35(x-10)=(8-85x)
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(1)
:x=
:
x=
×
x÷
=
÷
x=
(2)
x+
x-
=0.5
x-
=0.5
x-
+
=0.5+
x÷
=
÷
x=1
(3)
(x-10)=8-
x
x-6=8-
x
x-6+
7 |
16 |
7 |
8 |
32 |
9 |
7 |
8 |
7 |
16 |
32 |
9 |
7 |
8 |
7 |
8 |
14 |
9 |
7 |
8 |
x=
16 |
9 |
(2)
2 |
3 |
1 |
2 |
2 |
3 |
7 |
6 |
2 |
3 |
7 |
6 |
2 |
3 |
2 |
3 |
2 |
3 |
7 |
6 |
7 |
6 |
7 |
6 |
7 |
6 |
x=1
(3)
3 |
5 |
8 |
5 |
3 |
5 |
8 |
5 |
3 |
5 |