Răspuns:
x = 29/30
Explicație pas cu pas:
(x + 2 8/15)×3/2 = 5 1/4
(x + 38/15)×3/2 = 21/4
¹⁰⁾3x/2 + ⁴⁾19/5 = ⁵⁾21/4
30x + 76 = 105
30x = 105 - 76
30x = 29
x = 29/30
[tex](x + 2 \frac{8}{15} ) \times \frac{3}{2} = 5 \frac{1}{4} = (x + \frac{38}{15}) \times \frac{3}{2} = \frac{21}{4} = x + \frac{38}{15} = \frac{21}{4} \div \frac{3}{2} = x + \frac{38}{15} = \frac{21}{4} \times \frac{2}{3} = x + \frac{38}{15} = \frac{7}{2} = > x = \frac{7}{2} - \frac{38}{15} = > x = \frac{105}{30} - \frac{76}{30} = > x = \frac{29}{30} [/tex]
sper ca e bine si ca te-am ajutat!!