ПЖ ПОМОГИТЕ!!!!!!!!! 50 БАЛЛОВ!!! -1 1\3х+2\5х-2 4\5=-16 4\5=. Created by violetta5a. matematika-ru

Решение:Ответ: 15.___________________Удачи Вам! :)

ПЖ ПОМОГИТЕ!!!!!!!!! 50 БАЛЛОВ!!! -1 1\3х+2\5х-2 4\5=-16 4\5=...

violetta5a @violetta5a

July 2022 1 13 Report

ПЖ ПОМОГИТЕ!!!!!!!!! 50 БАЛЛОВ!!!
-1 1\3х+2\5х-2 4\5=-16 4\5=

Answers & Comments

TankistBlitz2020

Решение:

$- 1 \frac{1}{3} x + \frac{2}{5}x - 2 \frac{4}{5} = - 16 \frac{4}{5}; \\ - 1 \frac{5}{15} x + \frac{6}{15}x - 2 \frac{12}{15} = - 16 \frac{12}{15}; \\ - 1 \frac{5}{15} x + \frac{6}{15}x = 2 \frac{12}{15} - 16 \frac{12}{15}; \\ - (1 \frac{5}{15} - \frac{6}{15})x = - (16 \frac{12}{15} - 2 \frac{12}{15}); \\- (\frac{20}{15} - \frac{6}{15})x = - (16 - 2); \\ - \frac{14}{15} x = - 14; \\ x = - 14 \div ( - \frac{14}{15}) ; \\x = \frac{14 \times 15}{1 \times 14};\\ x = \frac{1 \times 15}{1 \times 1};\\x = 15.$

Ответ: 15.

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TankistBlitz2020 рад помочь! :)

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violetta5a August 2022 | 0 Ответы

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