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Solve-the-following-system-of-equations-3x-8z-11-2y-3x-3-y-4z-7-See-the-comment-of-Q-9439-

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Question Number 9455 by RasheedSoomro last updated on 09/Dec/16
Solve the following system of equations 3x−8z=−11 2y−3x=−3 y−4z=−7 See the comment of Q#9439.
Solvethefollowingsystemofequations3x−8z=−112y−3x=−3y−4z=−7You can't use 'macro parameter character #' in math mode
Answered by geovane10math last updated on 09/Dec/16
Equation 3: y = 4z − 7 2(4z − 7) − 3x = −3 8z − 14 − 3x = −3 New system: 3x − 8z = −11 (i) 8z − 3x = 11 (ii) 3x − 8z = −11 (i) −3x + 8z = 11 (ii) x and z can be any number, because the equation (i) is only −(ii).
Equation3:y=4z−72(4z−7)−3x=−38z−14−3x=−3Newsystem:3x−8z=−11(i)8z−3x=11(ii)3x−8z=−11(i)−3x+8z=11(ii)xandzcanbeanynumber,becausetheequation(i)isonly−(ii).

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