Решите пж))))))))))))))))

Решите задачу:

$a)8 \times \frac{7}{36} - x = 3 \times \frac{7}{9 } \\ x = 3 \times \frac{7}{9} + 8 \times \frac{7}{36} \\ x = 3 \times \frac{28}{36} + 8 \times \frac{7}{36} \\ x = 11 \times \frac{35}{36} \\ \\ b)(x - 0.25) + 3 \times \frac{1}{12} = 7 \times \frac{1}{3} \\ (x - 0.25) = 7 \times \frac{1}{3 } - 3 \times \frac{1}{12} \\ x - 0.25 = 4 \times \frac{3}{12} \\ x - 0.25 = 4 \times \frac{1}{4} \\ x = 4 \times \frac{1}{4} + \frac{1}{4} \\ x = 4 \times \frac{1}{2} \\ x = \frac{9}{2} =4.5$