Toán Lớp 6: -75 . (18 – 65) – 65 (75 – 18)
giupppp
Leave a reply
Register Now
Login
Lost Password
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Toán Lớp 6: -75 . (18 – 65) – 65 (75 – 18)
giupppp
Comments ( 2 )
-75. ( 18 – 65) – 65. ( 75 – 18)
= -75. 18 + 75. 65 – 65. 75 + 65. 18
= ( 75. 65 – 65. 75)+( -75. 18 + 65. 18)
= 18. ( -75 + 65) + 75. ( 65 – 65)
= 18. ( – 10) + 75. 0
= – 180 + 0
= – 180
-75. ( 18 – 65) – 65. ( 75 – 18)
= -75. 18 + 75. 65 – 65. 75 + 65. 18
= ( -75. 18 + 65. 18) + ( 75. 65 – 65. 75)
= 18. ( -75 + 65) + 75. ( 65 – 65)
= 18. ( – 10) + 75. 0
= – 180 + 0
= – 180