<span>2,6х-0,75=0,9-35,6</span>
<span>2,6х-0,75=-34,7</span>
<span>2,6х=-34,7+0,75</span>
<span>2,6х=-33,95</span>
<span>х=-679/52=-13 3/52</span>
<span>
</span>
<span><span>3,4+0,65=0,9х-25,6</span></span>
<span><span>4,05=0,9х-25,6</span></span>
<span><span>4,05+25,6=0,9х</span></span>
<span><span>29,65=0,9х</span></span>
<span><span>х=593/18=32 17/18</span></span>