4.8%-----350 4.8%------250 100%-----х 100%-----х
350*100:4.8 = 7291, х = 250 * 100 :4,8= 5208
4.8%-------120 4,8%-----500
100%------х 100%----х
х= 120* 100 : 4.8= 2500 х = 500 * 100 : 4.8 =10417
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>