Ответ:
2к+к+3к-66=13*6
6к=78+66
6к=144
к=24
7m-m+4m+7.6=0.8/0.5
10m=1.6-7.6
10m=-6
m=-6/10=-0.6
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Ответ:
2к+к+3к-66=13*6
6к=78+66
6к=144
к=24
7m-m+4m+7.6=0.8/0.5
10m=1.6-7.6
10m=-6
m=-6/10=-0.6