nculberson6
01.09.2020 •
Mathematics
- 9r + 15(12 + 6r) = - 4r - 7r
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Ответ:
r=135
Step-by-step explanation:
-9r + 15 x 18 = -11r
-9r + 270 = -11r
-9r = -11r -270
2r = 270
r = -135
Ответ: