0.8x[13÷（1.12+1.48)]
=0.8x[13÷2.6]
=0.8x[130÷26]
=0.8x[13x10÷13x2]
=0.8x[10÷2]
=0.8x5
=4
1.5x[(4.8-3.6)÷0.2]
=1.5x[4.8÷0.2-3.6÷0.2]
=1.5x[24-18]
=1.5x6
=9