Question

$\frac{1}{3} (x - 4) + 6x = 5 - 1 \frac{1}{2}$
$3.2(1 - 2y) = 0.7(3y = 1.5)$
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Answer 1

Ответ:

$1)x = \frac{29}{38} \\2) y = 0.5$

Пошаговое объяснение:

$1) \frac{1}{3} (x - 4) + 6x = 5 - 1\frac{1}{2} | \times 3 \\ x - 4 + 18x = 15 - 4 \frac{1}{2} \\ 19x = 15 - 4.5 - 4 \\ 19x = 14.5 \\ x = \frac{29}{38} \\ 2)3.2(1 - 2y) = 0.7(3y - 1.5) \\ 3.2 - 6.4y - 2.1y + 1.05 = 0 \\ 8.5y = 4.25 \\ y = 0.5$