1) x + 3x + 5 = 174x + 5 = 174x = 12x = 3
2) 3.5x = 2.2x + 4.563.5x - 2.2x = 4.561.3x = 4.56x = 4.56 / 1.3x ≈ 3.5077
1) x + 3x + 5 = 17
4x + 5 = 17
4x = 12
x = 3
2) 3.5x = 2.2x + 4.56
3.5x - 2.2x = 4.56
1.3x = 4.56
x = 4.56 / 1.3
x ≈ 3.5077