Question

5х-7.2=5.6-2.4
пропорции , как решать?

Answer 1

$5x \div 7.2 = 5.6 \div 2.4 \\ x = \frac{7.2 \times 5.6}{5 \times 2.4} \\ x = \frac{72 \times 56}{50 \times 24} \\ x = \frac{3 \times 28}{25} = \frac{84}{25} = 3 \frac{9}{25}$

Answer 2

5x-7.2=3.2
5x=3.2+7.2
5x=10.4
x=2.08