Question

Daca a:b=3 c:a=2 si c-b=45 calculeaza 2b+a+3c Metoda grafica

Answer 1

a=3 segmente
b=1 segment
c=6 segmente
c-b=45
6 segmente-1 segment =45
5 segmente =45
1 segment =45:5
1 segment =9
a=9x3
a=27
b=9x1
b=9
c=9x6
c=54
2b+a+3c=
9x2+27+54x3=
18+27+162=
45+162=
207. Sper ca te-am ajutat!