0,3х+0,8у+1,5х+1,2у=1,8х+2у
4,2х+5,3у-2,6у-1,8х=2,4х+2,7у
1,5а+9,7ь+5,8а-1,3ь=7,3а+8,4ь
12,75а+1,85ь-9,55а+3,5ь=3,2а+5,35ь
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0,3х+0,8у+1,5х+1,2у=1,8х+2у
4,2х+5,3у-2,6у-1,8х=2,4х+2,7у
1,5а+9,7ь+5,8а-1,3ь=7,3а+8,4ь
12,75а+1,85ь-9,55а+3,5ь=3,2а+5,35ь