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OpenStudy (banjoman):
Express the set −4x+21<3x+7 -4x+21<3x+7 using interval notation
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OpenStudy (visarika23):
-4x+21<3x+7 Subtract 3x from both sides -4x-3x+21<7 Now subtract 21 from both sides -7x<-14 Now multiply by -1 on both side This will change the sign of inequality 7x>14 Divide by 7 x>2 So x lies from 2 to infinity
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