X≠-1,5
2x-4-10x-15=0
-8x=19
x=-19/8=-2 3/8
<span>4(2-3x)-(5-x) >11-x
8-12х-5+х>11-x
-12x+x+x>11-8+5
-10x>8
x<-0,8
</span>x∈<span>(<span>−∞;−0,8</span><span>)</span></span>
Решение
<span>Log3 X +logx 3 =2
x > 0, x </span>≠ 1<span>
log</span>₃ x + log₃ 3/log₃ x = 2
log₃ ² - 2log₃x + 1 = 0
log₃x = z
z² - 2z + 1 = 0
(z - 1)² = 0
z = 1
<span>log₃x = 1
</span><span>x = 3</span>
3/4.(-1,5) - 3 = -4,5/4 - 3 = -9/8 - 3 = -9/8 - 24/8 = -33/8