次の計算をしなさい。 |
| 1 |
| 2x+1 |
+ |
x+3 |
= |
2x+1+x+3 |
| 2 |
2 |
2 |
|
2 |
| 4x+3 |
− |
x+1 |
= |
4x+3−x−1 |
| 5 |
5 |
5 |
|
| 3 |
| x+1 |
+ |
x−2 |
= |
x+1 |
+ |
2(x−2) |
| 4 |
2 |
4 |
4 |
|
4 |
| x−y |
− |
x−y |
= |
3(x−y) |
− |
2(x−y) |
| 2 |
3 |
6 |
6 |
|
| 5 |
| 5x+4 |
+ |
2x−3 |
= |
4(5x+4) |
+ |
2x−3 |
| 2 |
8 |
8 |
8 |
| = |
20x+16+2x−3 |
= |
|
22x+13 |
| 8 |
8 |
|
6 |
| 4x−5 |
− |
3x+2 |
= |
2(4x−5) |
− |
3(3x+2) |
| 6 |
4 |
12 |
12 |
| = |
8x−10−9x−6 |
= |
|
−x−16 |
| 12 |
12 |
|
| 7 |
| 2a−5 |
+ |
4a+1 |
= |
5(2a−5) |
+ |
3(4a+1) |
| 3 |
5 |
15 |
15 |
| = |
10a−25+12a+3 |
= |
|
22a−22 |
| 15 |
15 |
|
8 |
| 7x+3y |
− |
4x−5y |
= |
2(7x+3y) |
− |
3(4x−5y) |
| 9 |
6 |
18 |
18 |
| = |
14x+6y−12x+15y |
= |
|
2x+21y |
| 18 |
18 |
|
| 9 |
| |
 |
(2x−5)− |
 |
(3x+1) |
| = |
4x−10−9x−3 |
= |
|
−5x−13 |
| 6 |
6 |
|
10 |
| 2x−3y+ |
x−y |
= |
3(2x−3y) |
+ |
x−y |
| 3 |
3 |
3 |
|