Toán Lớp 6: Tính
a,9/42-7/14+10/-16
b,9/42+5/-10-10/6
c,-17/30-10/15-7/72
Giúp mik với mn
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: Tính
a,9/42-7/14+10/-16
b,9/42+5/-10-10/6
c,-17/30-10/15-7/72
Giúp mik với mn
Comments ( 2 )
Lời giải và giải thích chi tiết:
a) 9/42 – 7/14 + (10/-16)
= 3/14 – 7/14 + (-5/8)
= -4/14 + (-5/8)
= -51/56
b) 9/42 + (5/-10) – 10/6
= 3/14 + (-1/2 ) – 5/3
= -2/7 – 5/3
=-41/21
c) -17/30 – 10/15 – 7/72
= -17/30 – 20/30 – 7/72
=-37/30 – 7/72
=-479/360
a 9/42-7/14+10/-16
=-2/17+10/-16
= -51/56
b 9/42+5/-10-10/6
=-2/7-10/6
=-41/21
c -17/30-10/15-7/72
=-37/30-7/72
=-479/360