Question

Решить уравнения
6х-5/7=2х-2/3+2
5-х/2+3х-1/5=4
/это дробь

Answer 1

$6x - \frac{5}{7} = 2x - \frac{2}{3} + 2$

$6x - 2x = \frac{5}{7} - \frac{2}{3} + 2$

$4x = 2 \frac{1}{21}$

$x = 2 \frac{1}{21} \div 4 = \frac{43}{21} \times \frac{1}{4}$

$x = \frac{43}{84}$

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$5 - \frac{x}{2} + 3x - \frac{1}{5} = 4$

$3x - 0.5x + 5 - \frac{1}{5} = 4$

$2.5x + 4 \frac{4}{5} = 4$

$2.5x = 4 - 4 \frac{4}{5}$

$2.5x = - \frac{4}{5} = - 0.8$

$x = - 0.8 \div 2.5$

$x = - 0.32$