System of linear equations, an Uncommon card

The card carries these facts from its Wikipedia article.

• For example, { 3 x + 2 y − z = 1 2 x − 2 y + 4 z = − 2 − x + 1 2 y − z = 0 is a system of three equations in the three variables x, y, z.
• A solution to a linear system is an assignment of values to the variables such that all the equations are simultaneously satisfied.
• In the example above, a solution is given by the ordered triple =, since it makes all three equations valid.

Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The System of linear equations article was read about 73,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 72 and blocks with 59: each hit it takes is cut by 24 %.

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The cards just above and just below System of linear equations in the power ranking, all domains together.