n-49980=7436-6870
n-49980=566
n=49980+566
n=50546
6870+(n-49980)=7436
Ответ: n=50546
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n-49980=7436-6870
n-49980=566
n=49980+566
n=50546
6870+(n-49980)=7436
n-49980=566
n=50546
Ответ: n=50546