Ответ:
4(х-2)+10x=20
4x-8+10x=20
14x-8=20
14x=20+8
14x=28
x=2
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Ответ:
4(х-2)+10x=20
4x-8+10x=20
14x-8=20
14x=20+8
14x=28
x=2