Question

Ma poate ajuta si pe mine cineva la c,d si e multumesc

Answer 1

c) (423-c):(671-111x3x2)=70

(423-c):(671-333x2)=70

(423-c):(671-666)=70

(423-c):5=70, 423-c=70x5, c=423-350=73

d) (1000-dx2-25x4):6=143

(1000-2d-100)=143x6

900-2d=858, 2d=900-858, 2d=42, d=42/2=21