Ответ:
1)2x+7y-44-0 4y=-80
2x-3y=-36
4y=80/:4
y=20
2x-3*20=-36
2x-60=-36
2x=-36+60
2x=24/:2
x=2
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Verified answer
Ответ:
1)2x+7y-44-0 4y=-80
2x-3y=-36
4y=80/:4
2x-3y=-36
y=20
2x-3*20=-36
y=20
2x-60=-36
y=20
2x=-36+60
y=20
2x=24/:2
x=2