The product of X and 1.5 plus 8.4 is 36 times 0.4

The product of X and 1.5 plus 8.4 is 36 times 0.4

1.5x+8.4=36*0.4
1.5x+8.4=14.4
1.5x=14.4-8.4
1.5x=6
x=4