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✔
