$$8 \frac{ A }{ 7 } -2=3 \frac{ A }{ 4 } +5$$
$A = \frac{196}{11} = 17\frac{9}{11} \approx 17.818181818$
$$32A-56=21A+140$$
$$32A-56-21A=140$$
$$11A-56=140$$
$$11A=140+56$$
$$11A=196$$
$$A=\frac{196}{11}$$
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