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Safe Exam Browser is a webbrowser-environment to carry out online-exams safely. The software changes any computer into a secure workstation. It regulates the access to any utilities and prevents students from using unauthorised resources.

...The application generates arbitrary equations containing 1-4 variables. It is for the student to provide values for these variables which make the equation true. For example, in the screenshot above the equation is: 18-64-c*d=4. The student must choose values for c and d which result in a true statement. One approach would be to solve for the product "c*d" and then choose 2 numbers whose product satisfies what's needed. Like this: 18-64-c*d=4 18-64-4=c*d c*d=-50 Then the student could pick any two numbers with product of -50, like c=-25 and d=2. ...