该脱括号? 该如何脱括号?如:1+(5 X )=100

Question

如题所述

Answer 1

直接把括号去掉就行了,因为5 X 是两数相乘,不影响的.
1+(5 X )=100
1+5 X =100
5 X =100-1
5 X =99
X =99/5