3 years ago

–9x + 9y = 9 y = –7 ( , )

Mathematics

1 answer:

Y_Kistochka [10]3 years ago

6 0

Answer:

x=-8

(-8,-7)

Step-by-step explanation:

–9x + 9y = 9

–9x + 9(-7) = 9 (y=-7)

-9x-63=9

Both side +63

-9x=63+9

-9x=72

Both side divide -9

x=-8

y=-7

(-8,-7)

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