irisgaleasdias
irisgaleasdias
28-04-2021
Mathematics
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meowmeow223334
meowmeow223334
28-04-2021
Use substitution
Since you know they are both y, you can make the values of each equal to each other.
2x - 9 = -x + 3
3x = 12, x = 4
Plug x = 4, into any equation
Y = 2(4) - 9
Y = 8 - 9 = -1, y = -1
Solution: (4,-1)
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