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X/2=y/3=z/3
x+y+z=40
x=?
y=?
z=?.


Răspuns :

Explicație pas cu pas:

[tex]\frac{x}{2} = \frac{y}{3} = \frac{z}{3} = \frac{x + y + z}{2 + 3 + 3} =\frac{x + y + z}{8} = \frac{40}{8} = 5 [/tex]

[tex] \frac{x}{2} = 5 \\ x = 2 \times 5 = >x = 10 [/tex]