I dont understand these problems |×| - 1 < 5 , 3x + 4 <-2, 5x/7 -2=1, 9(2x+3)=10

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asked Oct 23, 2016 25.4k views

1 vote

I dont understand these problems |×| - 1 < 5 , 3x + 4 <-2, 5x/7 -2=1, 9(2x+3)=10

Mathematics
high-school

Ethan Webster asked

by Ethan Webster

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1 Answer

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$|x|-1<5\\ |x|<6\\ x<6 \wedge x>-6\\ x\in(-6,6)\\\\ 3x+4<-2\\ 3x<-6\\x<-2\\\\ (5x)/(2)-2=1\\ (5x)/(2)=3\\ 5x=6\\ x=(6)/(5)\\\\ 9(2x+3)=10\\ 18x+27=10\\ 18x=-17\\ x=-(17)/(18)$

Samantha Branham answered Oct 28, 2016

by Samantha Branham

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