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

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

User Ethan Webster
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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)
User Samantha Branham
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