Ответ:
2)67-21y=25
21y=-42
y=-2
4)83+29x=982
29x=899
x=31
2)(63-y)+109=121
63-y=12
y=51
4)103-(z+47)=54
z+47=-49
z=-96
2)122+(y-7)=200
y-7=78
y=85
4)53-(y-13)=24
y-13=-29
y=-16
2)(200+x):12=32
200+x=384
x=184
4)729:(c-15)=81
C-15=9
C=24
6)12×(97-z)=240
97-z=20
Z=77
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Ответ:
2)67-21y=25
21y=-42
y=-2
4)83+29x=982
29x=899
x=31
2)(63-y)+109=121
63-y=12
y=51
4)103-(z+47)=54
z+47=-49
z=-96
2)122+(y-7)=200
y-7=78
y=85
4)53-(y-13)=24
y-13=-29
y=-16
2)(200+x):12=32
200+x=384
x=184
4)729:(c-15)=81
C-15=9
C=24
6)12×(97-z)=240
97-z=20
Z=77
4)29х=982-83 29х=899 х=899:29 х=31
2)63+109-121=у у=51
4)103-47-54=z z=2
2)y=200+7-122 y=85
4)53+13-24=y y=42
2)200:12+x:12=32 x:12=32-200:12 x=184
4)729:c-729:15=81 729:c=81-729:15 c =22,5
6)12•97-12z=240 1164-240=12z 12z=924 z=27