Question

there are 92 students in the third and fourth grades of these 47 are in fourth grade write an equation to find how many third graders there are use a question mark to represent the unknown number and solve

Answer 1

92=?+47
subtract 47 from both sides to get ? by itself
?=45

Answer 2

There are 45 students in third grade.

Explanation:

Total number of students in 3rd and 4th grade: 92

Number of students in 4th grade: 47.

Number or students in 3rd grade: ?

Equation:

? + 47 = 92

? = 92-47

? = 45