Question

como resolver a equação :

200=200*4,2*(Tf - 10) /42

Answer 1

$200= \frac{2400.4,2.(TF-10)}{42} \\ \\ 200= \frac{240.10.4,2.(TF-10)}{42} \\ \\ 200= \frac{240.42.(TF-10)}{42} \\ \\ 200=240.(TF-10) \\ \\ 200=240TF-2400 \\ \\ 2600=240TF \\ \\ TF= \frac{2600}{240} \\ \\ TF= \frac{260}{24} \\ \\ TF= \frac{130}{12} \\ \\ TF= \frac{65}{6} \\ \\ \\ ou \\ \\ \\ TF=10,8$

esse 10,8 é aproximado