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26 votes
26 votes
This is really confusing I could really use some help with this thank you.

This is really confusing I could really use some help with this thank you.-example-1
User Brian Peacock
by
2.5k points

1 Answer

28 votes
28 votes

15) 2x-5=-20

2x-5+5=-20+5

2x=-15


(2x)/(2)=(-15)/(2)


x=-(15)/(2)

16) x/3-7=11

x/3=11+7

x/3=18

x=18*3

x=54

17)
(9x)/(4)=-9


(4\cdot \:9x)/(4)=4\left(-9\right)


9x=-36


(9x)/(9)=(-36)/(9)


x=-4

User Alessandro Peca
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3.1k points