Question

Encontre o valor da incógnita

Answer 1

Resposta:

$\frac{5 - x}{9} - \frac{x - 1}{6} - \frac{2x + 1}{12} = 0 \\ \\ m.m.c.(9.6.12) = 36 \\ \\ \frac{20 - 4x}{36} - \frac{6x - 6}{36} - \frac{6x + 3}{36} = 0 \\ \\ \frac{20 - 4x - 6x - 6 - 6x + 3}{36} = 0 \\ \frac{20 - 6 + 3 - 4x - 6x - 6x}{36} = 0 \\ \frac{17 - 16x}{36} = 0 \\ \\ 17 - 16x = 0 \times 36 \\ 17 - 16x = 0 \\ - 16x = 0 - 17 \\ - 16x = - 17 \\ x = - 17 \div( - 16) \\ \\ x = \frac{17}{16}$