Ответ:
18m-7m+m-11=13
18m-8m=13+11
10m=24
m=2.4
(8n-7)*3=123
8n-7=41
8n=41+7
8n=48
n=6
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Ответ:
18m-7m+m-11=13
18m-8m=13+11
10m=24
m=2.4
(8n-7)*3=123
8n-7=41
8n=41+7
8n=48
n=6