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2x=6,8-2,2
2x=4,6 |:2
x=2,3l
2,3l=2,2l=4,5l
Odp. W jednym naczyniu jest 2,3l, a w drugim 4,5l mleka.
x+2,2-drugie naczynie -2,3+2,2=4,5l
x+x+2,2=6,8
2x+2,2=6,8
2x=4,6
x=2,3