The math test
The math test contains 20 problems. For each correctly solved problem, the solver gets 3 points. For each incorrectly solved or unsolved problem, 2 points are deducted. Ondrej got 25 points. How many problems did he solve correctly?
Correct answer:
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Do you have a linear equation or system of equations and are looking for its solution? Or do you have a quadratic equation?
You need to know the following knowledge to solve this word math problem:
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