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Mathematics 9 Online
OpenStudy (anonymous):

solve the system of equations: 5x + 2y + z =-11 2x - 3y -z = 17 7x + y + 2z = -4

OpenStudy (tamtoan):

take the first equation add to second equation and then multiply the first equation with -2 then add to the third equation...then you will have a system of 2 equations with 2 variables and you can solve that.

OpenStudy (anonymous):

Compare your answer to (0,-6,1)

OpenStudy (anonymous):

thank you

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