1.5xy + 3/5x -(0.2x - 0.8xy) упростить выражение
1,5xy+0.6x-0.2x+0.8xy=2.3xy+0.4x или x(2.3y+0.4)
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1,5xy+0.6x-0.2x+0.8xy=2.3xy+0.4x или x(2.3y+0.4)