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Sagot :
Answer:
x=-3, y=4. (-3, 4). B)
Step-by-step explanation:
7x+2y=-13
-3x-8y=-23
-------------------
4(7x+2y)=4(-13)
-3x-8y=-23
---------------------
28x+8y=-52
-3x-8y=-23
-------------------
25x=-75
x=-75/25
x=-3
7(-3)+2y=-13
-21+2y=-13
2y=-13-(-21)
2y=-13+21
2y=8
y=8/2
y=4
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