Mathematics for IGCSE & O level - Inequalities (Section 2 - No. 23)

Solve the inequality: -2x + 1 ≤ 5.

x ≤ -2

x ≥ -2

x ≤ 3

x ≥ 3

Giải thích

-2x ≤ 4, dividing by a negative number changes the sign, so x ≥ -2.

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