Question

СРОЧНО Реши уравнение:
1/4y+7=22−1/12y .

Answer 1

1/4y+1/12y=22-7

3/12y+1/12y=15

1/3y=15

y=45

Answer 2

$\frac{1}{4} y + \frac{1}{12} y = 22 - 7$

Домножаем 1/4 на 3

$\frac{3}{12} y + \frac{1}{12} y = 15$

$\frac{4}{12} y = 15$

$y = 15 \div \frac{4}{12}$

$y = 15 \times \frac{12}{4}$

$y = 15 \times \frac{3}{1} = 45$

Проверка

$\frac{1}{4} \times 45 + 7 = 22 - \frac{1}{12} \times 45$

45/4+7=22-45/12

11,25+7=22-3,75

18,25=18,25