Question

Va rog ex 7 urgentt rapiddd

Answer 1

Explicație pas cu pas:

946+17-x=251

963-x=251

x=963-251

x=712

v:946+17-712=963-712=251✔

y-129+483=824

y-612=824

y=824+612

y=1 436

v:1 436-129+483=1 307-483=824✔

405-z+244=382

405-z=382-244

405-z=138

z=405-138

z=267

v:405-267+244=138+244=382✔

176-u×(15-4×3)+327=488

176-u×(15-12)+327=488

176-u×3+327=488

176-u×3=488-327

176-u×3=161

u×3=176-161

u×3=15

u=15:3

u=5

v:176-5×(15-4×3)+327=

176-5×(15-12)+327=

176-5×3+327=

176-15+327=

161+327=

488✔

3x(a×7-3×8)+507-473=46

3×(ax7-24)+507-473=46

3×(a×7-24)+507=46+473

3x(ax7-24)+507=519

3×(ax7-24)=519-507

3×(a×7-24)=12

a×7-24=12:3

a×7-24=4

a×7=24+4

ax7=28

a=28:7

a=4

v:3×(4×7-3×8)+507-473=

3×(28-24)+507-473=

3×4+507-473=

12+507-473=

519-473=

46✔

947-153-8×(25-6×v)=738

794-8×(25-6×v)=738

8×(25-6×v)=794-738

8×(25-6×v)=56

25-6×v=56:8

25-6×v=7

6xv=25-7

6×v=18

v=18:6

v=3

v:947-153-8×(25-6×3)=

947-153-8x(25-18)=

947-153-8×7=

947-153-56=

794-56=

738✔