x+2y |
y |
3x |
2x+3y-5z |
x+2y+3z |
3x-2y-z |
x+2y |
y |
2a+6a |
3a |
8 |
3 |
3x |
2x+3y-5z |
3×2a |
2×2a+3×3a-5×4a |
6 |
7 |
x+2y+3z |
3x-2y-z |
2a+2×3a+3×4a |
6a-6a-4a |
a |
3 |
b |
5 |
c |
7 |
a+b+c |
b |
a+2b-3c |
a+c |
b+c |
a |
c+a |
b |
a+b |
c |
b+c |
a |
x |
2 |
y |
3 |
z |
5 |
x+3y-z |
x-3y+z |
a |
b |
c |
d |
e |
f |
2 |
3 |
a+e |
b+f |
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