Question

плииз умоляю!!--------------------------------

Answer 1

Ответ:

$a)4(3 - 2x) + 24 = 2(3 + 2x) \\ 12 - 8x + 24 = 6 + 4x \\ - 8x - 4x = 6 - 36 \\ - 12x = - 30 \\ x = \frac{30}{12} \\ x = \frac{5}{2}$

$0.2(5y - 2) = 0.3(2y - 1) - 0.9 \\ y - 0.4 = 0.6y - 0.3 - 0.9 \\ y - 0.6y = - 1.2 + 0.4 \\ - 0.4y = - 0.8 \\ y = 2$

$\frac{0.8x - 3}{0.3} = \frac{0.6x - 8.4}{ - 9} \\ - 24x + 90 = 0.6x - 8.4 \\ - 24x - 0.6 = - 8.4 - 90 \\ - 24.6x = - 98.4 \\ x = 4 \\ \\ \frac{0.8 \times 4 - 3}{0.3} = \frac{0.6 \times 4 - 8.4}{ - 9} \\ \frac{3.2 - 3}{0.3} = \frac{2.4 - 8.4}{ - 9} \\ \frac{0.2}{0.3} = \frac{ - 6}{ - 9} \\ \frac{2}{3} = \frac{2}{3}$