exercițiu 2 Dau coroana! a b c d

Exercițiu 2 Dau Coroana A B C D class=

Răspuns :

a). 3x = 18
x= 6

b). 10x = 100
X = 10



c). 2x = 8
X = 4


d). 5x = 100
X = 20

[tex] \frac{2}{3} = \frac{x}{9} \\ x = \frac{2 \times 9}{3} = 6[/tex]
[tex] \frac{x}{8} = \frac{1}{2} \\ x = \frac{8 \times 1}{2} = 4[/tex]

[tex] \frac{5}{x} = \frac{10}{20} \\ x = \frac{5 \times 20}{10} = 10[/tex]