脱式计算,能简算的要简算 （53.76-17.6）÷1.8 （0.8×7+4.56÷1.9）×12.515.73-（2.17+0.73）-1.83
问题描述：
脱式计算,能简算的要简算 （53.76-17.6）÷1.8 （0.8×7+4.56÷1.9）×12.5
15.73-（2.17+0.73）-1.83
答
（53.76-17.6）÷1.8
=（54-18-0.24+0.4）÷1.8
=30-10+0.16÷1.8
=20又4/45
（0.8×7+4.56÷1.9）×12.5
=（0.8×7+0.8×5.7÷1.9）×12.5
=（0.8×7+0.8×3）×12.5
=0.8×10×12.5
=10×10
=100
15.73-（2.17+0.73）-1.83
=15.73-2.17-0.73-1.83
=15.73-0.73-（2.17+1.83）
=15-4
=11
答
（53.76-17.6）÷1.8 =36.16÷1.8＝20又4/45（0.8×7+4.56÷1.9）×12.5＝0.8*12.5*7+2.4*12.5＝0.8*12.5*7+0.8*12.5*3＝10*（7+3）＝10015.73-（2.17+0.73）-1.83＝15.73-0.73－（2.17+1.83）＝15-4＝11...