Question

daca numerele naturale a,b verifica egalitatile a+b=150 4c=b=108 atunci calculati

15a+4b-44c
9(a-4c)-5(a+2b+4c)
3a+10b+28c

Answer 1

a+b=150 =>a=150-b=> a=150-108=> a=42
4c=108 =>c=27
b=108
Iar de calculat e simplu:
15*42-4*108-44*27=630-432-1188=-990
9(42-108)-5(42+108*2+4*27)=9*(-66)-5*(42+216+108)=-594-5*366=-594-1940=-2534
3*42+10*108+28*27=126+1080+756=1962