Question

a) Daca a+b=2,7 si b+c=8,3, atunci calculati 3a+5b+2c.
b) Daca a+b=3,08 si b+c=0,55, atunci calculati 3a+7b+4c.
c) Daca a+b=3,3 si a+c=2,2, atunci calculati 5a+3b+2c.
d) Daca a+b=43,5 si a+c=1,11, atunci calculati 5a+3b+2c.

Answer 1

a) 3a+5b+2c= 3a+3b+2b+2c=2,7*3+8.3*2=8,1+16,6=24,7
b) 3a+7b+4c=3a+3b+4b+4c=3*3.8+0,55*4=11,4+2,2=13.6
c)5a+3b+2c=3a+3b+2a+2c=3*3.3+2*2.2=9.9+4.4=14.3
d) 5a+3b+2c=3a+3b+2a+2c=43.3*3+1.11*2=130.8+2.22=133.02
Esentialul la exercitiile acestea este sa le organizezi in asa fel incat sa le dai factor comun!
Sper ca te-am ajutat! ;)