2)0,1х+2х+3,15 = 5,5125
0,1x + 2x = 5,5125 – 3,15
2.1x = 2.3625
x = 1.125
3)4а +15а -3,4 =54,74
4a + 15a = 54,74 + 3,4
19a = 58.14
a = 3.06
2)0,1х+2х+3,15 = 5,5125
0,1x + 2x = 5,5125 – 3,15
2.1x = 2.3625
x = 1.125
3)4а +15а -3,4 =54,74
4a + 15a = 54,74 + 3,4
19a = 58.14
a = 3.06