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15.03.2020 •
Mathematics
Which expression can you substitute for in 12x +y=5 to solve the system below.
x= 6- y
12x + y=5
A) 5-12y
B) 5+y
C) 6-y
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Ответ:
C
Step-by-step explanation: Since x is by itself in the first equation, we can substitute 12x + y = 5 into 12(6-y) + y = 5.
Ответ:
-4, -x^2, x^2, 4
Step-by-step explanation: