👤
Lariidenii
a fost răspuns

stiind ca a+b = 14 si b+c=9 calculati
2a+5b+3c=

Răspuns :

Matepentrutoti
a+b = 14|*2=>2a+2b=28
b+c=9|*3=>3b+3c=27
2a+5b+3c=(2a+2b)+(3b+3c)=28+27=55.
Andy5
2a+5b+3c=(2a+2b)+(3b+3c)=28+27=55

Alte intrebari