$$0.26y+0.21=0.04y-0.06$$
$y = -\frac{27}{22} = -1\frac{5}{22} \approx -1.227272727$
$$0.26y+0.21-0.04y=-0.06$$
$$0.22y+0.21=-0.06$$
$$0.22y=-0.06-0.21$$
$$0.22y=-0.27$$
$$y=\frac{-0.27}{0.22}$$
$$y=\frac{-27}{22}$$
$$y=-\frac{27}{22}$$
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