Question 172837
a){{{-9x-10<=-46}}}add 10 to both sides of equation
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{{{-9x<=-36}}} now divide both sides by -9 remembering that dividing by a 
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negative reverses the inequality sign.
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{{{highlight(x>=4)}}}
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b){{{-6<=3(x-1)<12}}} distribute the middle term 3(x-1)=3x-3
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{{{-6<=3x-3<12}}}now add 3 to all terms
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{{{-3<=3x<15}}}now divide all terms by 3 to isolate the x
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{{{highlight(-1<=x<5)}}}