Question

5 Теңдеулерді шеш.
2•(100+х)=400
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Answer 1

$2(100+x)=400\\100+x=400:2\\100+x=200\\x=200-100\\x=100$

Answer 2

Ответ:

200+2х=400

2х=400 - 200

2х=200

х=100