Question

решите плиз-(х+5х)+7=55

Answer 1

х+5х+7=55

6х+7=55

6х=55-7

-6х=48

х=48/6

х=8

 

 

 

 

 

 

 

 

 

 

Answer 2

6х=55-7

6х=48

х=48/6

х=8

Проверка: (8+5*8)+7=55

55=55