Which equation shows how to find the value of ? 2/3 + 7/4 + 3/4 *
A. 2+7+3/ 2+4+4 = 12/11
B. 8/12 + 21/12 + 9/12 = 38/36
C. 8/12 + 21/12 + 9/12 = 38/12
D. 2/12 + 7/12 + 3/12 = 12/12
PLS HELPPP!!! PLEASE MY GRADE WENT FROM 98 TO 60 BC OF MY MATH TEACHER PLS HELP