Question

I need help in the last one, i don understand it

Answer 1

84 = 7×12

84 = 3×4×7

84 = 2×2×3×7

Explanation:

84 = 7 × 12 ( the factors of 12 are 3×4)

so 84 = 3×4×7 ( the factors of 4 are 2×2)

so 84 = 2x2x3x7

I hope it helps you!