<span>а) 3(1-х) - 5(х+2)=1-4х</span>
<span>3 - 3x - 5x - 10 -1 + 4x = 0</span>
<span>-4x - 8 = 0</span>
<span>-4x = 8</span>
<span>x = -2</span>
<span><span>в) (4+5х) - 3(2-х)=16х-0,4</span></span>
<span><span>4 + 5x - 6 + 3x - 16x +0,4 =0</span></span>
<span><span>-8x = -1,6</span></span>
<span><span>x = 0,2</span></span>