1) <span>8,9x+17,54=5,4x+2,84</span>
<span>8,9х - 5,4х = 2,84 - 17,54 </span>
3,5х = -14,7
х = -14,7 : 3,5
х = -4,2
2) <span>4,37+6,7x=7,75+9,3</span>
<span>6,7х = 7,75 + 9,3 - 4,37 </span>
<span>6,7х = 12,68 </span>
<span>х = 12,68 : 6,7</span>
<span>х = 1,8</span>
<span>3) <span>4*(3-x)-11=7*(2x-5)</span></span>
<span><span>12 - 4х - 11 = 14х - 35 </span></span>
<span><span>-4х - 14х = -35 - 1 </span></span>
<span><span>- 18х = -36</span></span>
<span><span>х = 36 : 18</span></span>
<span><span>х = 2 </span></span>