Упростите выражения:
1)45b+20c+b−8b
2)39a+39c−a+11c
3)48b−15n+2b+12b
4)33d−20x+2d−3x
5)28b+27n+2b+20b
6)32a+8c−2c+a
7)m+a−a−17m
8)−9,7y−y
1)45b+20c+b−8b
2)39a+39c−a+11c
3)48b−15n+2b+12b
4)33d−20x+2d−3x
5)28b+27n+2b+20b
6)32a+8c−2c+a
7)m+a−a−17m
8)−9,7y−y
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