22mhenton
15.11.2019 •
Mathematics
What is the solution of the system of linear equations?
–3x + 4y = –18
2x – y = 7
a. (–2, –3)
b. (–2, 3)
c. (2, –3)
d. (2, 3)
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Ответ:
2x-y=7
the answer qould be C.(2,-3)
-3(2)+4(-3)=-18
-6+(-12)=-18
-18=-18
2(2)-(-3)=7
4+3=7
7=7
C.
Ответ: