дам 25 1.2*(а-7)-1.8*(3-а) если а= 4 1/3. Created by mart71. matematika-ru

3...

mart71 @mart71

July 2022 1 4 Report

дам 25
1.2*(а-7)-1.8*(3-а)
если а= 4 1/3

Answers & Comments

wsaspo

Пошаговое объяснение:

$1.2(a - 7) - 1.8(3 - a) \\ 1.2a - 8.4 - 5.4 + 1.8a \\ 1.2 \times ( \frac{13}{3} ) - 13.8 + 1.8 \times ( \frac{13}{3} ) = \\ 5.2 - 13.8 + 7.8 = - 13.8 + 13 = - 0.8$

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