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solve the inequalites, and graph; (1)b+12<18 (3)-8-b_<-8 (4)c+5.1_<-2.4...

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solve the inequalites, and graph; (1)b+12<18 (3)-8-b_<-8 (4)c+5.1_<-2.4 (5)6z<36. please can you answer these question and show me the calculations. its really important i have exams 

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#1) `b +12 < 18 rArr b < 18`

Subtract 12 from both sides

#3)  `-8 - b < -8`

add 8 to both sides

        `-b < 0 rArr b > 0`

divide by -1, changes direction of inequality

#4)  `c + 5.1 < -2.4` ``

subtract 5.1 from each side

            `c < -7.5`

#5)  `6z < 36`

divide by 6

`z < 6`

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