Question

Exercițile 7,8,9,10,11 urgent vărog. Dau coroana primului care le rezolvă corect.Dau 26 de puncte

Answer 1

r+a+v=145
r=a+v+9
a=v-2__v=a+2
a_/
r_/_/...+9+2 total 145
v _/...+2
145-(2+2+9)=145-13=132
132÷4=33(segm a)
33+2=35(segm v)
r=33+35+9=77

8)
a+b+c=729
a=b×2
c= 9+b×3
a__/__/
b__/ total 729
c__/__/__/....+9
729-9=720
720÷6=120(segm b
a=120×2=240(segm a
c=360+9=369(segm c

10)
z+r=360
z=r×2
r__/...+46 total 360
z__/__/...+116

360-46-116=198
198÷3=66(reviste
66×2=133(ziare
(132+116)-(66+46)=136

11)
a =4×b
a×2-b×3=335

a_/_/_/_/_/_/_/_/
b_/_/_/ 335
335÷5=67(b)
67×4=268(a
v:268+67=335