Question

Х:2 1/2=1,3:0,26 срочно

Answer 1

$x \div 2 \frac{1}{2} = 1.3 \div 0.26$

$x \div 2 \frac{1}{2} = 5$

$x = 5 \div 2 \frac{1}{2}$

$x = 2$

вроде так