a-2b |
b |
5 |
3 |
a+b |
b |
a-2b |
b |
5 |
3 |
a |
b |
5 |
3 |
a |
b |
5 |
3 |
11 |
3 |
a |
b |
11 |
3 |
a+b |
b |
14 |
3 |
14 |
3 |
A.1cm,2cm,20cm,40cm | B.1cm,2cm,3cm,4cm |
C.4cm,2cm,1cm,3cm | D.5cm,10cm,15cm,20cm |
1 |
a |
1 |
b |
5 |
a+b |
b |
a |
a |
b |
A.5 | B.7 | C.3 | D.
|
A.2,3,4,6 | B.2,3,4,5 | C.2,3,5,7 | D.3,4,5,6 |
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