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rainbowboy6055
09.07.2019 •
Mathematics
Ican tell me you’re asked to solve negative 4x -25 equals 8x +15 identify where one of them made an error
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Ответ:
x = -![\frac{10}{3}](/tpl/images/0070/7209/b5927.png)
- 4x - 25 = 8x + 15
subtract 8x from both sides
- 4x - 8x - 25 = 15
- 12x - 25 = 15
add 25 to both sides
- 12x = 15 + 25 = 40
divide both sides by - 12
x =
= - ![\frac{10}{3}](/tpl/images/0070/7209/b5927.png)
Ответ: