题目内容
If x=2 is a solution of the epuation
{
[
(
+4)-7]+10}=1,then a=______.
(英汉词典:solution解;epuation方程)
| 1 |
| 9 |
| 1 |
| 6 |
| 1 |
| 3 |
| x+a |
| 2 |
(英汉词典:solution解;epuation方程)
根据题意得:
{
[
(
+4)-7]+10}=1,
即
[
(
+4)-7]+10=9,
[
(
+4)-7]=-1,
(
+4)-7=-6,
(
+4)=1,
+4=3,
=-1,
∴a=-4.
故答案为:-4.
| 1 |
| 9 |
| 1 |
| 6 |
| 1 |
| 3 |
| 2+a |
| 2 |
即
| 1 |
| 6 |
| 1 |
| 3 |
| 2+a |
| 2 |
| 1 |
| 6 |
| 1 |
| 3 |
| 2+a |
| 2 |
| 1 |
| 3 |
| 2+a |
| 2 |
| 1 |
| 3 |
| 2+a |
| 2 |
| 2+a |
| 2 |
| 2+a |
| 2 |
∴a=-4.
故答案为:-4.
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