Question

2x:1.8=2.5 решите уравнение ​

Answer 1

$2x \div 1.8 = 2.5 \\ 2x = 2.5 \times 1.8 \\ 2x = 4.5 \\ \\ x = \frac{4.5}{2} \\ \\ x = \frac{45}{20} \\ \\ x = \frac{9}{4}$