1) 2.5x + x = 479 - 6.083.5x = 472.92x = 472.92 / 3.5x ≈ 135.12
2) 0.3x + x - 0.15x = 16.1 - 0.011.15x = 16.09x = 16.09 / 1.15x ≈ 13.96
3) x - 0.25x - 0.3x = 135 / 10000.45x = 1.35x = 1.35 / 0.45x = 3
4) 5x - 4.3x + 1.3x = 0.0003 / 0.012x = 0.03x = 0.03 / 2x = 0.015
5) 1.75x + 50 - 0.3 = 84.71.75x = 34.3x = 34.3 / 1.75x ≈ 19.54
6) 0.4x + 2.75 + 6.2x = 55.556.6x = 52.8x = 52.8 / 6.6x = 8
7) x - 0.2x + 82.1 = 882.10.8x = 800x = 800 / 0.8x = 100
1) 2.5x + x = 479 - 6.08
3.5x = 472.92
x = 472.92 / 3.5
x ≈ 135.12
2) 0.3x + x - 0.15x = 16.1 - 0.01
1.15x = 16.09
x = 16.09 / 1.15
x ≈ 13.96
3) x - 0.25x - 0.3x = 135 / 1000
0.45x = 1.35
x = 1.35 / 0.45
x = 3
4) 5x - 4.3x + 1.3x = 0.0003 / 0.01
2x = 0.03
x = 0.03 / 2
x = 0.015
5) 1.75x + 50 - 0.3 = 84.7
1.75x = 34.3
x = 34.3 / 1.75
x ≈ 19.54
6) 0.4x + 2.75 + 6.2x = 55.55
6.6x = 52.8
x = 52.8 / 6.6
x = 8
7) x - 0.2x + 82.1 = 882.1
0.8x = 800
x = 800 / 0.8
x = 100