amiechap12
05.02.2022 •
Mathematics
Solve the system of equations algebraically.
3x+8y=−6
x−y=9
(x,y)= (
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Ответ:
Step-by-step explanation:
x=y+9
substitute
3(y+9)+8y=-6
3y+27+8y= -6
13y = -6 -27
13y= -33
y = -33/13
x = -33/13 + 9
Ответ: