$$2 x + 0.06 = 0.4 + 1.22$$
$x=0.78$
$$2x+0.06=1.62$$
$$2x=1.62-0.06$$
$$2x=1.56$$
$$x=\frac{1.56}{2}$$
$$x=\frac{156}{200}$$
$$x=\frac{39}{50}$$
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