taynicole1018
Answered

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Question 5(Multiple Choice
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Worth 1 points)
(04.02 LC)
Solve the following system of equations:
x + 3y = -4
X + 5y = -6
(1, 1)
(-1, 1)
(1, -1)
(-1,-1)

Sagot :

Y=(-4-x)/3
Y=(-6-x)/5
(-4-x)/3=(-6-x)/5
-20-5x=-18-3x
-5x+(3x)=-18+20
-2x=2
X=2/-2=-1

-1+5Y=-6
5Y=-6+1
5Y=-5
Y=-1
(-1,-1)
-x+-3y=4
x+5y=-6
2y=-2
y=-1
x+3(-1)=-4
x-3=-4
+3=+3
x=-1
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