а) 2,1х-3,5=1,4х
2,1x – 1,4x = 3,5
0.7x = 3.5
x = 5
б) 2•(4-1,9х)=0,8-0,2х
8 – 3.8x = 0.8 – 0.2x
– 3,8x + 0,2x = 0,8 – 8
-3.6x = -7.2
x = 2
а) 2,1х-3,5=1,4х
2,1x – 1,4x = 3,5
0.7x = 3.5
x = 5
б) 2•(4-1,9х)=0,8-0,2х
8 – 3.8x = 0.8 – 0.2x
– 3,8x + 0,2x = 0,8 – 8
-3.6x = -7.2
x = 2