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5 steps: (1) 2/3 × 4/5 = ? (2) Rule: multiply numerators (2×4=8), multiply denominators (3×5=15). Answer: 8/15. (3) Why this works: area model shows it! (4) Always simplify: 3/4 × 2/3 = 6/12 = 1/2. (5) Cross-cancel BEFORE multiplying for easier numbers: in 3/4 × 2/3, the 3s cancel, giving 1/4 × 2/1

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