1) 2x + 1/8.1 = 2/1.8 -> 2x + 0.123 = 1.1112x = 1.111 - 0.1232x = 0.988x = 0.494
2) 3x - 1/3.5 = 2.8/0.7 -> 3x - 0.286 = 43x = 4 + 0.2863x = 4.286x = 4.286 / 3x = 1.429
3) 1.4 / 2x - 1 = 2.1 / 7.5 -> 1.4 / 2x - 1 = 0.281.4 = 0.28 + 2x - 11.4 = 0.28 + 2x - 11.4 = 0.28 + 2x - 11.4 = 2.28 + 2x-0.88 = 2xx = -0.44
1) 2x + 1/8.1 = 2/1.8 -> 2x + 0.123 = 1.111
2x = 1.111 - 0.123
2x = 0.988
x = 0.494
2) 3x - 1/3.5 = 2.8/0.7 -> 3x - 0.286 = 4
3x = 4 + 0.286
3x = 4.286
x = 4.286 / 3
x = 1.429
3) 1.4 / 2x - 1 = 2.1 / 7.5 -> 1.4 / 2x - 1 = 0.28
1.4 = 0.28 + 2x - 1
1.4 = 0.28 + 2x - 1
1.4 = 0.28 + 2x - 1
1.4 = 2.28 + 2x
-0.88 = 2x
x = -0.44