Are these triangles congruent, if yes, why?

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Two positive integers are 3 units apart on a number line. their product is 108. which equation can be used to solve for m, the greater integer? m(m – 3) = 108 m(m + 3) = 108 (m + 3)(m – 3) = 108 (m – 12)(m – 9) = 108

When using the linear combination metho e linear combination method to solve a system of linear equations, the four options are:

Having a hard time understanding this question (see attachment).