12martinkat
04.10.2019 •
Mathematics
For which equation is x=-1/2 a solution
a.
7 – 4x = –9
b.
9x + 2 = 7
c.
6 + 8x = –10
d.
10x – 3 = –8
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Ответ:
10x – 3 = –8
10 (-1/2) – 3 = –8
-5 - 3 = - 8
-8 = -8
Ответ: