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MATHEMATICS

JAMB 2010 - Question 20

Mathematics 2010 JAMB Past Questions - Question 20: Solve the inequalities -6 ≤ 4-2x

Solve the inequalities -6 ≤ 4-2x<5-x

A: -1≤x<6

B: -1

C: -1

D: -1≤x≤6

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Correct Answer

Explanation

- 6 < 4 -2x < 5 -xsplit ineqality into two an solve each part as follows-6< 4-2x = - 6 -4 < -2x10<-2x-10/2 > -2x/-2giving 5 > x or x < 54-2x < 5-4-x <1-x/-1 > 1/-1giving x > -1 or -1 combining the two results, gives -1 < x < 5