Ответ:
1)x≤ 2)x∈<1,4> 3)x∈<<img src="https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B2%7D%20%2C%20%5Cfrac%7B7%7D%7B2%7D" id="TexFormula2" title="\frac{1}{2} , \frac{7}{2}" alt="\frac{1}{2} , \frac{7}{2}" align="absmiddle" class="latex-formula">>
Пошаговое объяснение:
1)≤0
3(2x-1)-4(3-x)≤0
6x-3-12+4x≤0
10x-15≤0
10x≤15
x≤
2)0 }} \right." alt="\left \{ {{x^{2}-2x-8<0 } \atop {x^{2}+4x-5>0 }} \right." align="absmiddle" class="latex-formula">
|x ∈ <-2,4>
<</p>
|x ∈ <-∞,-5>∪<1,+∞>
x∈<1,4>
3)|2x-4|<3</p>
2x-4<3</p>
2x-4≥0-(2x-4)<3</p>
2x-4<0</p>
x< , x≥2
x> , x<2</p>
x∈[2, >
x∈<<img src="https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B2%7D" id="TexFormula9" title="\frac{1}{2}" alt="\frac{1}{2}" align="absmiddle" class="latex-formula">,2>
x∈<<img src="https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B2%7D%20%2C%20%5Cfrac%7B7%7D%7B2%7D" id="TexFormula10" title="\frac{1}{2} , \frac{7}{2}" alt="\frac{1}{2} , \frac{7}{2}" align="absmiddle" class="latex-formula">>