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Rosemary Stewart
Mathematics
8 April, 14:20
Use substitution method
8x=-2y-10
2x=4y
+2
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1
)
Aubree Bell
8 April, 14:49
0
2x = 4y
x = (4y) / 2
x = 2y
8x = - 2y - 10
8 (2y) = - 2y - 10
16y + 2y = - 10
18 y = - 10
y = - 10/18
y = - 5/9
So, how x = 2y
x = 2 (-5/9)
x = - 10/9
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