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Автор - жежорик

Какое из уравнений не имеет корней
1[х] =2
2)5x=4x
3)2x+3=2x+1
4)2x+5=5+2x

Ответ

Автор - alinarossip1

4)2x+5=5+2x
2x-2x=5-5
0x=0
Любое число может быть корнем 

3)2x+3=2x+1
2x-2x=1-3
0x=-2
Корней нет


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