# SOLUTION: solve using cramer's rule: 4x-3y=-7 3x-9y=15 x=?, y=? i put these equations in the augmented matrix form, but i was stuck on how to actually solve the equation. i thought tha

Algebra ->  Algebra  -> Matrices-and-determiminant -> SOLUTION: solve using cramer's rule: 4x-3y=-7 3x-9y=15 x=?, y=? i put these equations in the augmented matrix form, but i was stuck on how to actually solve the equation. i thought tha      Log On

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 Question 612685: solve using cramer's rule: 4x-3y=-7 3x-9y=15 x=?, y=? i put these equations in the augmented matrix form, but i was stuck on how to actually solve the equation. i thought that you were only able to solve cramers rule if you are given a square matrix. can you please help me solve this equation?Answer by Alan3354(30983)   (Show Source): You can put this solution on YOUR website!solve using cramer's rule: 4x-3y=-7 3x-9y=15 ----------- Det = -36+9 = -27 ------ For x: -7 -3 15 -9 --> 63 + 45 = 108 x = -4 =============== For y: 4 -7 3 15 --> 60 + 21 = 81 x = -3