Question

Urgent!!!!!! dau coroana

Answer 1

2 x b +b +3 x b +b:2 = 195

6 x b +b / 2 = 195

12x b + b) / 2 = 195

13 x b = 390

b = 390 : 13

b = 30

a = 30 x 2 = 60

c = 3 x 30 = 90

d = 30 : 2 = 15

graphic ( asta pt ca nu stiu ce clasa esti)

b |__|__|

a |__|__|__|__|

c |__|__|__|__|__|__|

d |__|

195:13 = 15 = d

b = 15x 2 = 30

a = 30 x 2 = 60

c = 30 x 3 = 90