31Dec

Помогите! Даю 50 Баллов. 69 : (2 * y - 1) = 21 : 3 И 748 - (b+248) = 300.

Помогите! Даю 50 Баллов. 69 : (2 * y - 1) = 21 : 3 И 748 - (b+248) = 300.

Posted by arua | Posted at Dec 31, 2013 | Categories: Математика

Answers

darinka2011
darinka2011

1) 69 : (2y - 1) = 7 2y - 1 = 69 : 7 2y - 1 = 69/7 2y = 76/7 y = 38/7 2)  b+248 = 748 - 300 b + 248 = 448 b = 448 - 248 b = 200

Dec 31, 2013 18:33

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