Question

Cunoscand 5a + 2b=36 si a supra 4 = b supra 5= c supra 12,determinati a,b si c.

Answer 1

{a,b,c}dp{4,5,12}=
a/4=b/5=c/12=k
a=4k
b=5k
c=12k
5a+2b=36
5*4k+2*5k=36
20k+10k=36
30k=36
k=36/30
k=1,2
a=4k=4*1,2=4,8
b=5k=5*1,2=6,0
c=12k=12*1,2=14,4

PROBA:5a+2b=36
5*4,8+2*6,0=36
24+12=36
36=36

coronita

Answer 2

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