Question

сделайте пж пжпжпжпжпдпддпдпддпдпддппдп хоть 1​

Answer 1

Ответ:

$2x - 3 = 5 - 3x \\ 2x + 3x = 5 + 3 \\ 5x = 8 \\ x = 1 \frac{3}{5}$

$\frac{3}{4} x - ( \frac{3}{4} - 2x) = 1 \frac{1}{2} + x \\ \frac{3}{4} x - \frac{3}{4} + 2x = 1 \frac{1}{2} + x \\ \frac{3}{4} x + 2x - x = 1 \frac{1}{2} + \frac{3}{4} \\ 1 \frac{3}{4} x = 2 \frac{1}{4} \\ x = \frac{9}{4} \div \frac{7}{4} \\ x = 1 \frac{2}{7}$

$2.9y - 4(1.2 - y) = 5.4(y + 2) \\ 2.9y - 4.8 + 4y = 5.4y + 10.8 \\ 2.9y + 4y - 5.4y = 10.8 + 4.8 \\ 1.5y = 15.6 \\ y = 10.4$

$\frac{0.6 - y}{9} = \frac{1.3 - y}{4.5} \\ \\ 4.5(0.6 - y) = 9(1.3 - y) \\ 2.7 - 4.5y = 11.7 - 9y \\ 9y - 4.5y = 11.7 - 2.7 \\ 4.5y = 9 \\ y = 2$