<span>
3,4*(0,4х+0,2)+1,52=8,32</span>
<span />3,4*0,4х+3,4*0,2+1,52=8,32
1,36x + 0.68 + 1.52 = 8.321.36x = 8.32 - 0.68-1.52
1.36x = 6.12
<span>x = 6.12 : 1.36
x = 4.5</span>
<span /><span>2) 44,62:(7,8+0,5х)+26,51=31,11</span>
<span>44.62:(7,8+0,5x) =31.11-26.51</span>
<span>44.62 : (7.8+0.5x) =4.6</span>
<span>7.8+0.5x = 44.62 : 4.6</span>
<span>7.8 + 0.5x = 9.7</span>
<span>0.5x = 9.7 -7.8</span>
<span>0.5x = 1.9</span>
<span>x = 1.9 : 0.5</span>
<span>x = 3.8
</span>