12000+x×5=12455 ??¿?????¿?????

Question

12000+x×5=12455 ??¿?????¿?????

Answer 1

12000+5x=12455
5x=12455-12000
5x=455
x=91

Comments

12000+х•5=12455 , х•5=12455-12000 , х•5=455 , х=455÷5 , х=91

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тоже самое