Question

1/2(х-4)+3х=5
ПОМОГИТЕ ТПЛЗ​

Answer 1

Ответ:

$0.5x - 2 + 3x = 5 \\ 3.5x - 7 = 0 \\ x - 2 = 0 \\ x = 2$

Answer 2

Ответ:

$\frac{1}{2} x - 2 + 3x = 5 \\ 3 \frac{1}{2} x - 2 = 5 \\ 3 \frac{1}{2} x = 5 + 2 \\ 3 \frac{1}{2} x = 7 \\ x = 7 \div 3 \frac{1}{2} = 7 \div \frac{7}{2} = 7 \times \frac{2}{7} \\ x = 2$