2х - 4 = 22; 2х = 22 + 4; 2х = 26; х = 26 : 2; х = 13 (48/2) / Х = 6; 24 : х = 6; х = 24 : 6; х = 4
18х + 40 = 94; 18х = 94 - 40; 18х = 54; х = 54 : 18; Х = 3
(12 + 2х) + 14 * 2 = 44; 12 + 2х + 28 = 44; 2х = 44 - 12 - 28; 2х = 4; х = 2
28 - 2х = 2; 2х = 28 - 2; 2х = 26; х = 26 : 2; х = 13<span> </span>
1) 6/1,5=4 л молока.
2) 6/1,2= 5 л молока.
=70х+150+8х-24=78х+126
х=3
78×3+126=360
х=101
78×101+126=8004
Bx + 5 = 4x + 2b
bx - 4x = 2b - 5
x(b - 4)= 2b - 5
x = (2b-5)/(b-4) ,где b не равно 4.