0.8*3.6-0.8*0.6
=0.8*(3.6-0.6)
=0.8*3
=2.4
4.86*【1÷(2.1-2.09)】
=4.86*【1÷0.01】
=4.86*100
=486
1042-384÷16*13
= 1042-24*13
= 1042-312
=730
0.8*3.6-0.8*0.6
=0.8*(3.6-0.6)
=0.8*3
=2.4
4.86*【1÷(2.1-2.09)】
=4.86*【1÷0.01】
=4.86*100
=486
1042-384÷16*13
= 1042-24*13
= 1042-312
=730