2x+1-8<0
3-2x<0
2x-7<0
3-2x<0
2x<7
3<2x
x=(3:7)
<span>7х-5(2x+1)=5x+15
7x-10x-5=5x+15
-3x-5=5x+15
8x+20=0
x=-20/8
x= - 2.5
</span>
ОДЗ
x ≠ 0
3x^2 - 10x + 10 = 0
D = 100 - 120 < 0
<span>корней на множестве действительных чисел нет</span>
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