0.888*125*73+999*3
=0.111*(8*125)*73+111*9*3
=0.111*1000*73+111*27
=111*(73+27)
=11100
7.2-1.5x=1.5
x=(7.2-1.5)/1.5=3.8
3.5*12+3.5*2*x=59-1.5x
8.5x=59-42
x=2