3/5x + 1/2(3/5x) + 10 = x
0.6x + 0.3x + 10 = x
0.9x + 10 = x
10 = x - 0.9x
10 = 0.1x
x = 10 : 0.1
x = 100
3/5 * 100 = 60
3/5x + 1/2(3/5x) + 10 = x
0.6x + 0.3x + 10 = x
0.9x + 10 = x
10 = x - 0.9x
10 = 0.1x
x = 10 : 0.1
x = 100
3/5 * 100 = 60