Question

пж помогите 2)4)6) тольо это

Answer 1

$2)x - \frac{1}{2} = \frac{3}{4} x \\ x - \frac{3}{4}x = \frac{1}{2} \\ \frac{1}{4} x = \frac{1}{2} \\ 0.25x = 0.5 \\ x = 2 \\ 4)1 \frac{4}{5} y = y + 4 \\ 1 \frac{4}{5} y - y = 4 \\ \frac{4}{5} y = 4 \\ y = \frac{4 \times 5}{4} \\ y = 5 \\ 6) \frac{3}{4} y - \frac{2}{3} = \frac{7}{12} y \\ \frac{3}{4} y - \frac{7}{12} y = \frac{2}{3} \\ \frac{9y - 7y}{12} = \frac{2}{3} \\ 3(9y - 7y) = 12 \times 2 \\ 27y - 21y = 24 \\ 6y = 24 \\ y = 4$