Help please?

1 answer:

6 0

13)4n-40=-14n+14
=4n+14n=14+40
=18n=54
n=54/18
n=3

14)35a-28-1=14-8a
35a+8a=14+29
43a=43
a=43/43
a=1

15)-31-4x=-5-5-25x
-4x+25x=-10+31
21x=21
x=21/21
x=1

16)38+7k=8k+32
7k-8k=32-38
-k=-8
k=-8/-1
k=8

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NEED HELP ASAP PLEASE!!!!!!!!!!!!!!!!!!