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 |
|