Question

1) 4 $\frac{1}{2}$ - х = 5 $\frac{3}{1}$
2) -2 * х = $\frac{5}{7}$
3) -6 * (х-1) = 19
Решите, Это дроби

Answer 1

1)

$4 \frac{1}{2} - x = 5 \frac{3}{1} \\4 \frac{1}{2} - x = 8 \\ x = 4 \frac{1}{2} - 8 \\ x = 4 \frac{1}{2} - 7 \frac{2}{2} \\ x = - 3 \frac{1}{2}$

2)

$- 2x = \frac{5}{7} \\ x = \frac{5}{7} \div ( - 2) \\ x = - \frac{5}{14}$

3)

$- 6(x - 1) = 19 \\ x - 1 = \frac{19}{ - 6} \\ x - 1 = - 3 \frac{1}{6} \\ x = - 3 \frac{1}{6} + 1 \\ x = - 2 \frac{1}{6}$