Ответ:
10(х+2)=-7
10х+20=-7
10х=-7-20
10х=-27
х=-27/10=-2,7
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Ответ:
10(х+2)=-7
10х+20=-7
10х=-7-20
10х=-27
х=-27/10=-2,7
10x+20=-7
10x=-7-20
10x=-27
x=-27÷10
x=-2,7