# 7th grade math

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**hello**
.

what are the rules for these two problem? I can not figure it out. I spent 30 minutes trying to figure it out

1, 10

2, 9

3, 8

4, 7

lI know the left is increasing by one and the right is decreasing by one but I can't find an equation for this.

and the second one is

0, -5

1, -12

2, -17

3, -22

4, -27

I know the