jr928718
21.05.2020 •
Mathematics
D – 10 – 2d + 7 = 8 + d – 10 – 3d
A. d = –5
B. d = –1
C. d = 1
D. d = 5
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Ответ:
I think its option D.d=5
Step-by-step explanation:
After writing the question rearrange into same sides
d-2d-d+3d=8-10+10-7
d-d-2d+3d=12-7
-2d+3d=5
d=5
Ответ:
360 - (120 + 48 + 92) = 100 degrees