10а+в-5а-3в+7=5а-2в+7
5*2-2*0,5+7=10-1+7=16
5a-2b+7=5*2-2*0,5+7=10-1+7=16
Ответ:16
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10а+в-5а-3в+7=5а-2в+7
5*2-2*0,5+7=10-1+7=16
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5a-2b+7=5*2-2*0,5+7=10-1+7=16
Ответ:16