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Mekhanik [1.2K]
3 years ago
6

4y - 5x = 9 x = 4y + 11

Mathematics
1 answer:
Galina-37 [17]3 years ago
4 0

4y - 5x = 9

x = 4y + 11

We can substitute this value of x in the first equation:

4y - 5(4y+11) = 9

4y - 20y - 55 = 9

16y = -64

y = -4

x = 4y + 11

x = -16 + 11

x = -5

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