2/3-5/3×21/15
=2/3-5/3×(21÷3)/(15÷3)
=2/3-5/3×7/5
=2/3-35/15
=2/3-(35÷5)/(15÷5)
=2/3-7/3
=-5/3
Copyright © 2024 ELIBRARY.TIPS - All rights reserved.
Lista de comentários
2/3-5/3×21/15
=2/3-5/3×(21÷3)/(15÷3)
=2/3-5/3×7/5
=2/3-35/15
=2/3-(35÷5)/(15÷5)
=2/3-7/3
=-5/3