\(9 \) A college has two classrooms of students.
- Classroom A had \( 70 \) students.
- Classroom B had \( 30 \) students. same number of students.
- Classroom A sent groups of \( 4 \) students to Classroom B until both classrooms had the same number of students.
The equation shown can be used to find the number of groups that Classroom A sent to Classroom B so each classroom had the same number of students.
\(70 - 4 x = 30 + 4 x\)
How many groups did Classroom A send to Classroom B?
Record your answer and fill in the bubbles on your answer document. Be sure to use the correct place value.