Question

А)y-7/12 y = 4 1/6 розвяжи рівняня В)x-9/16 x=5 1/4

Answer 1

$y - \frac{7}{12} y = 4 \frac{1}{6} \\ \frac{12}{12} y - \frac{7}{12} y = 4 \frac{1}{6} \\ \frac{5}{12} y = 4 \frac{1}{6} \\ y = 4 \frac{1}{6} \div \frac{5}{12} \\ y = \frac{25 \times 12}{6 \times 5} \\ y = 5 \times 2 \\ y = 10$

$x - \frac{9}{16} = 5 \frac{1}{4} \\ \frac{16}{16} x - \frac{9}{16} x = 5 \frac{1}{4} \\ \frac{7}{16} x =5 \frac{1}{4} \\ x = 5 \frac{1}{4} \div \frac{7}{16} \\ x = \frac{21 \times 16}{4 \times 7} \\ x = 3 \times 4 \\ x = 12$