y= 3/5x - 6 x= 4
(3/5)*x-6*x=4
(3/5)*x-6*x=4
3/5=0.6
0.6*x-6*x=4
0.6*x-6*x=4
-5.4*x=4 Divide with -5.4
x=4/(-5.4)
4/(-5.4)=40(-54)
x=40/(-54)
Factorization of numbers 40 and 54
40=2*2*2*5
54=2*3*3*3
x=40/(-54)
x=(2*2*2*5)/(-2*3*3*3)
x=(2*2*5)/(-3*3*3)
x=20/(-27)
x= -0,74074074074074074074074074074074