Question

14/25,1/5=15/2x-1 ajutor vă rog
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Answer 1

Răspuns:

$\frac{14}{25 \times \frac{1}{5} } = \frac{15}{2x - 1} \\ \frac{14}{ \frac{25}{5} } = \frac{15}{2x - 1} \\ \frac{14}{5} = \frac{15}{2x - 1} \\ \frac{14(2x - 1)}{5(2x - 1)} = \frac{15 \times 5}{5(2x - 1)} \\ \frac{28x - 14}{5(2x - 1)} = \frac{75}{5(2x - 1)} \\ \frac{28x - 14}{10x - 5} = \frac{75}{10x - 5} \\ 28x - 14 = 75 \\ 28x = 75 + 14 \\ 28x = 89 \\ x = \frac{89}{28}$