Question

Va rog sa ma ajutati cu tema asta!!!!
Afla necunoscutele:
u) (48+5.2.3:2):u=81:9
v) 500.100:2=3900+v
w) 1000:5:4:10+(96-w)=11
x) 47.60:0+5.(12:4.x)=366
y) 351+[8.8-(75:y+29)-17]=364
z) (25.z+173.15).2+13.7=5731

Answer 1

(48+5x2x3:2):u=81:9
(48+10x3:2):u=9
(48+30:2):u=9
(48+15):u=9
63:u=9
u=63:9
u=7

500x100:2=3900+v
500x50=3900+v
25000=3900+v
v=25000-3900
v=21100

1000:5:4:10+(96-w)=11
200:4:10+(96-w)=11
50:10+(96-w)=11
5+(96-w)=11
96-w=11-5
96-w=6
w=96-6
w=90

47x60:0+5x(12:4x)=366
2820:0+5x(12:4x)=366  (2820:0)nu se poate calcula,imposibil de impartit la 0

351+[8x8-(75:y+29)-17]=364
8x8-(75:y+29)-17=364-351
64-(75:y+29)=13+17
64-(75:y+29)=30
75:y+29=64-30
75:y+29=34
75:y=34-29
75:y=5
y=75:5
y=15

(25xz+173x15)x2+13x7=5731
(25xz+2595)x2+91=5731
(25xz+2595)x2=5731-91
(25xz+2595)x2=5640
25xz+2595=5640:2
25xz+2595=2820
25xz=2820-2595
25xz=225
z=225:25
z=9