+129899 x = amt to Xu
4x = amt to Adrian
3(x + 50) = amt to Vicky
2x -100 = amt to Cynthia
5 ( x + 4x) = amt to Franklin
4(2x - 100) = amt to Vivien
x + 4x + 3(x + 50) + (2x - 100) + 5(x + 4x) + 4(2x - 100) = 3950 simplify
5x + 3x + 150 + 2x - 100 + 5x + 20x + 8x - 400 = 3950
43x -350 = 3950 add 350 to both sides
43x = 4300 divide both sides by 43
x = 100 = amt to Xu
4(100)= 400 = amt to Adrian
3(100 + 50) = 450 = amt to Vicky
2(100) - 100 = 100 = amt to Cynthia
5(100 + 4(100) ) = 2500 = amt to Franklin
4 ( 2(100) -100) = 400 = amt to Vivien
