5(X+0.27)=4.5
x＋0.27＝0.9
x＝0.63
x﹙4.5×9﹚＝6
x＝6/﹙4.5×9﹚
x＝4/27
1.6x＝48/2
1.6x＝24
x＝24÷1.6
x＝72/5.