$$6.10 x + 19 = 4 x + 34$$
$x = \frac{50}{7} = 7\frac{1}{7} \approx 7.142857143$
$$6.1x+19-4x=34$$
$$2.1x+19=34$$
$$2.1x=34-19$$
$$2.1x=15$$
$$x=\frac{15}{2.1}$$
$$x=\frac{150}{21}$$
$$x=\frac{50}{7}$$
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