Question

2 2/7(7/8x-14)-8/13(6,5x-39)​

Answer 1

$2 \frac{2}{7} ( \frac{7}{8} x - 14) - \frac{8}{13} (6.5x - 39) = ( \frac{16}{7} \times ( \frac{7}{8} x - 14) - \frac{8}{13} \times ( \frac{13}{2} x - 39) = \frac{8}{91} \times (26( \frac{7}{8} x - 14) - 7( \frac{13}{2} x - 39)) = \frac{8}{91} \times ( \frac{91}{4}x - 364 - \frac{91}{2} x + 273 ) = \frac{8}{91} \times ( - \frac{91}{4}x - 91) = \frac{8}{91} \times ( \frac{1}{4} \times ( - 91x - 364)) = \frac{8}{91} \times ( \frac{1}{4} \times ( - 91(x + 4))) = \frac{8}{91} \times ( - \frac{1}{4} \times 91(x + 4)) = - 2(x + 4)$