Question

7) Aflați valorile lui a, b, c, d dacă: a+a=b; b+b=c; c+c=d; a+b+c+d=105​

Answer 1

B=2a

C=2b

D=2c

A+b+c+d=105

A/----\

B/----/----\

C/----/----/----/

D/----/----/----/----\

105:6=17,5(o parte egala a)

17,5x2=35(B)

35x2=70(C)

70x2=140(D)

Sper ca team ajutat!