<span>7k/18p - 4k/18p=(7k-4k)/18p=3k/18p=k/6p
</span><span>a - b/2b - a/2b=(2ab-b-a)/2b
</span><span>- a-12b/27a + a+15b/27a=(15b-2b)/27a=13b/27a</span>
15.1
K заменяем на 6
9.1 + 6 = 15.6
Решение
(a-b)³-3(a-b)² = (a-b)²(a-b-3)
<span>1) |7x-12|-|7x-1|=1
7x-12</span>≥0
(7x-12)-(7x-1)=1
7x-12≥0
7x-12-(7x-1)=1
x≥12¬7
7x-12-(7x-1)=1
x≥12¬7
7x-12-7x+1=1
x≥12¬7
-12+1=1
x≥12¬7
-11=1