Solving inequalities (Edexcel GCSE Maths): Flashcards

Statements comparing expressions using $<$, $>$, $≤$, or $≥$

$<$, $>$, $≤$, $≥$

Equations: specific value; inequalities: range of values

Same steps as equations - same operations to both sides

Reverse the direction of the inequality sign

When multiplying or dividing both sides by negative number

Variable isolated on one side, number on other side

Ranges of values, not single numbers

Variable not isolated

$-15 ≤ 5n < 10$ (two inequalities combined)

Split and solve each part separately, then combine

$n = -3, -2, -1, 0, 1$

Substitute value from solution range into original inequality