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Dianageorgiana794id

Răspuns:

(a+b+c)/3=48

a+b+c=48·3

a+b+c=144

a/3=b/4=c/5=k

a=3k

b=4k

c=5k

3k+4k+5k=144

12k=144=>k=144:12=>k=12

a=3·12=36

b=4·12=48

c=5·12=60

( a + b + c ) : 3 = 48

a + b + c = 48 × 3

a + b + c = 144

{ a ; b ; c } d.p { 3 ; 4 ; 5 }

a / 3 = b / 4 = c / 5 = a + b + c / 3 + 4 + 5 = 144 / 12 = 12

a / 3 = 12 => a = 12 × 3 = 36

b / 4 = 12 => b = 12 × 4 = 48

c / 5 = 12 => c = 12 × 5 = 60

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