<span>-(2,5x - 2,5)-(3,1x - 3,1) = -(1,6-1,6x)</span>
<span>-2,5х+2,5-3,1х+3,1=-1,6+1,6х</span>
<span>-5,6х+5,6=-1,6+1,6х</span>
<span>-5,6х-1,6х=-1,6-5,6</span>
<span>-7,2х=-7,2 |:(-7,2)</span>
<span>х=1</span>
<span><em>Ответ: х=1.</em>
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