2)х=7
Объяснение:
2)x-7+ | x | xx=7x |x|
x+ |x/xx-7x |x| = 7
x+xxx -7x=7, x ≥ 0 X-XXX-7x - x = 7 , x < 0
X = -1
x = 7 , X ≥ 0
X = 1
x = 7 x < 0
x = 7
○\ зачёркнуто
