Question

7x+11/12 - 13x-5/18 = 5 - 17x-19/30
20 pontos

Answer 1

$\frac{7x + 11}{12} - \frac{13x - 5}{18} = \frac{5 - 17x - 19}{30} = \\ \frac{15(7x + 11) - 10(13x - 5) = 6( - 14 - 17x)}{180} = \\ 105x + 165 - 130x + 50 = - 84 - 102x = \\ - 25x + 215 = - 84 - 102x = \\ - 25x + 102x = - 84 - 215 \\ 77x = - 299 = \\ x = \frac{ - 299}{77} \: \: ou \: - 3.88...$