Question

Поманите пожалуйста!
Решите линейное уравнение
а) 1/5x=15
в) 6x=1/9
г)7y=-7/8
д)3/5y=10

Answer 1

А)

$\frac{1}{5}x = 15$

$5 \times \frac{1}{5}x = 5 \times 15$

$x = 75$

В)

$6x = \frac{1}{9}$

$6x \div 6 = \frac{1}{9} \div 6$

$x = \frac{1}{9} \times \frac{1}{6}$

$x = \frac{1}{54}$

Г)

$7y = - \frac{7}{8}$

$7y \div 7 = - \frac{7}{8} \div 7$

$y = - \frac{7}{8} \times \frac{1}{7}$

$y = - \frac{1}{8}$

Д)

$\frac{3}{5}y = 10$

$\frac{5}{3} \times \frac{3}{5}y = \frac{5}{3} \times 1 0$

$y = \frac{50}{3}$