Răspuns :

Răspuns:

Explicație pas cu pas:

y/x = 1,3

y = 1,3x

3x + 2y = 3x + 2*1,3x = 3x + 2,6x = 5,6x

5x + y = 5x + 1,3x = 6,3x

(3x + 2y)/(5x + y) = 5,6x/6,3x = 5,6/6,3 = 56/10 : 63/10 = 56/10*10/63 = 56/63

= 8/9

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