Помогите пожалуйста) Пример 10. Created by ekaterinapopsuper. algebra-ru

Помогите пожалуйста) Пример 10...

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Помогите пожалуйста)
Пример 10

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Мпрмггнпшоиол 10) (3x + 6)/2 - (7x - 14)/3 - (x + 1)/9 = 0
(3x + 6)/2 - 3(7x - 14)/3 · 3 - (x - 1)/9 = 0
(3x + 6)/2 - (21x - 42)/9 - (x - 1)/9 = 0
(3x + 6)/2 - ((21x - 42) - (x - 1)/9 = 0
(3x + 6)/2 - (21x - 42 - x + 1)/9 = 0
(3x + 6)/2 - (20x - 41)/9 = 0
9(3x + 6)/2 · 9 - 2(20x - 41)/9 · 2 = 0
(27x + 54)/18 - (40x - 82)/18 = 0
((27x + 53) - (40x - 82)/18 = 0
(27x + 53 - 40x + 82)/18 = 0
(-13x + 135)/18 = 0
2(-6,5x + 67,5)/1 · 1/18 = 0
(-6,5x + 67,5) · 9 = 0
-58,5x + 607,5 = 0
-58,5x = (-607,5)
x = (-607,5)/(-58,5)
x = 121,5/11,7
x = 60,75/5,85
x = 12,15/1,17
x = 6,75/0,585
x = 1,35/0,117
x = 0,27/0,0234
x = 0,135/0,0117
x = 11,5384615385 = 11,5385 = 11,54
-58,5·11.54 + 607,5 = 0
−675,09

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