Question

решите 2 срочно а и б

Answer 1

........................

Answer 2

4хкв. +20х+25-4хкв.-2х+6х+3 = 4

24х= 4-25-3

24х=24 х=1

 

3х+2 + (5-х)*2 =6

3х+2+10-2х=6

Х=6-10-2

Х=-6