Solve for x, y, m, z
x=-\frac{1}{3}\approx -0.333333333
y = \frac{11}{9} = 1\frac{2}{9} \approx 1.222222222
z=\frac{7}{9}\approx 0.777777778
m = \frac{35}{9} = 3\frac{8}{9} \approx 3.888888889
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