题目内容
已知
=
=
,且x+y+z=100,求x+2y+3z=______.
| x |
| 2 |
| y |
| 3 |
| z |
| 5 |
∵
=
=
,∴y=
,z=
,
∵x+y+z=100,∴x+
+
=100,
∴x=20,y=30,z=50,
∴x+2y+3z=230
故答案为:230.
| x |
| 2 |
| y |
| 3 |
| z |
| 5 |
| 3x |
| 2 |
| 5x |
| 2 |
∵x+y+z=100,∴x+
| 3X |
| 2 |
| 5X |
| 2 |
∴x=20,y=30,z=50,
∴x+2y+3z=230
故答案为:230.
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