Question

49.' Розв'яжіть
1) 5x-4/2 =16x +1/7
2)4у+33/3=17у/2

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Answer 1

1)

$\frac{5x - 4}{2} = \frac{16x + 1}{7} \\ 7(5x - 4) = 2(16x + 1) \\ 35x - 28 = 32x + 2 \\ 35x - 32x = 2 + 28 \\ 3x = 30 \\ x = 10$

2)

$\frac{4y + 33}{3} = \frac{17y}{2} \\ 2(4y + 33) = 3(17y) \\ 8y + 66 = 51 + 3y \\ 8y - 3y = 51 - 66 \\ 5y = - 15 \\ y = - 3$