3 years ago

Does anyone know this?

Mathematics

1 answer:

zzz [600]3 years ago

7 0

Answer:

-3

Step-by-step explanation:

Since x=1, we can simplify the equation to 9+7y=-12.

To find the value of 7y, we first have to find what is missing.

-12-9=-21, so 7y has to be equal to -21. -21/7 equals -3, so y=-3.

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