Question

a) 2 < 3x − 5 < 7; - 6) -3 ≤ 4 - 2x ≤ 3;​

Answer 1

Ответ:

$x\in(2\frac{1}{3};4)$

$x\in[0,5;3,5]$

Объяснение:

$2 < 3x - 5 < 7\ \ \ |+5\\\\7 < 3x < 12\ \ \ |:3\\\\2\frac{1}{3} < x < 4\\\\x\in(2\frac{1}{3};4)$

$-3\leq 4 - 2x \leq 3\ \ \ |-4\\\\-7\leq -2x\leq -1\ \ \ |:(-2)\\\\3,5\geq x\geq 0,5\\\\0,5\leq x\leq 3,5\\\\x\in[0,5;3,5]$