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Anna [14]
2 years ago
10

Okay can you please help me do this

Mathematics
1 answer:
sertanlavr [38]2 years ago
7 0

Answer:

y=3

Step-by-step explanation:

Multiply 9 from both sides to cancel it out.

-27=-y/9

/9      /9

-3=-y

We can't have a negative variable, so we divide -1 from both sides.

-3=-y

/-1  /-1\

3=y

-hope it helps

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slavikrds [6]

19)

90 = 21x + 6\\-21x = 6 - 90\\-21x = -84\\x = 4

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132 = x + 139\\-x = 139 - 132\\-x = 7\\x = -7

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