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Mathematics 11 Online
OpenStudy (anonymous):

Use any algebraic method to solve the system. X - y + 2z = 4 X - 3z = 1 2y - z = -15

OpenStudy (triciaal):

one approach labeling the equations 1,2, and 3 using 1 write the expression for x using 3 write the expression for z substitute for x and z in equation 2 and solve for y use this value of y in equation 3 to find the value of z then use these to find the value of x

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