Selesaikan: 2/5 × (-3/7) -(1/4) -(3/7) × 3/5

Penyelesaian:

persamaan yang diberikan

(frac{2}{5}times frac{-3}{7}times frac{-1}{4}times frac{-3}{7}times frac{3} {5})

(frac{-6}{35}-frac{1}{4} – frac{9}{35})

(frac{-12-5-18}{70})

⇒ ( frac {-35} {70} )

= -1/2

Jadi, 2/5 × -3/7 — 1/14 — 3/7 × 3/5=-1/2

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