Question

1. urgeeeeennnntttt daaauuuu coroanaaa ​

Answer 1

a) x = 120 lei diferit de 90 lei

$x - \frac{2}{5} \times x = 72 \\ aducem \: la \: acelasi \: numitor \: comun \: 5 \\ 5x - 2x = 360 \\ 3x = 360 \\ x = 360 \div 3 = > x = 120 \: lei \: \\ 120 - \frac{2}{5} \times 120 = 72 \\ 120 - 2 \times 24 = 72 \\ 120 - 48 = 72 \\ 72 = 72 \: (adevarat)$

b)120-72=48 lei

$\frac{2}{5} \times 120 = > 2 \times 24 = 48 \: lei \: suma \: cheltuita \:$