Xiaohong scored 92 points in math, 90 points in Chinese, and 4 points higher than the average score of three subjects in English. How many points did she get in the English exam?
Suppose we get an X in English.
(92+90+x)÷3=x-4
182+x=3×(x-4)，
182+x=3x- 12，
2x= 182+ 12，
2x= 194，
x=97。
I got 97 points in the English exam.