10(х+4)=110
х+4=11
х=11-4
х=7
Ответ:
10x+40−30=80
10x+10=80
10x=80−10
10x=70
x=7
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10(х+4)=110
х+4=11
х=11-4
х=7
Ответ:
10x+40−30=80
10x+10=80
10x=80−10
10x=70
x=7