10+5.1-(3.98+0.26)
=10+5.1-3.98-0.26
=10+5.1-4+0.02-0.26
=(10+4)+(5.1+0.02-0.26)
=14+4.86
=18.86按照这个简便计算方式，最终的答案是错误的啊！呵呵。。。。。10+5.1-(3.98+0.26)=10+5.1-3.98-0.26=10+5.1-4+0.02-0.26=(10-4)+(5.1+0.02-0.26)=6+4.86=10.86