67 + 12 = ?
67 + 23 = ?
256, 23 + 12, 56 =
56, 23 + 12, 45 =
89, 67 - 23, 45 =
1, 23 + 34, 67
19, 56 + 45, 65 =
Giúp mình với ạ, giải chi tiết nhé !
Mình xin cảm ơn ạ !
a/ 12,7 - 17,2 + 199,9 - 22,8 - 149,9
b/ (−12−12)4 + |−23−23| - 20070
c/ 4(−12−12)3 + |1212| : 5
d/ 3 - (−67−67)0 + √99 : 2
e/ 27232723 + 521521 - 423423 + 621621 + 1212
a: =12,7-40+50=12,7+10=22,7
Trả lời câu hỏi sau:
14/67 : 32/67=
12/78 + 23/56-
14/67÷32/67
14/67×67/32
14/32
12/78+23/56
672/4368+1794/4368
2466/4368
tính bằng cách hợp lí nhất
a) 31/23 - (7/23 + 8/23)
b) (1/3 + 12/67 + 13/41 ) - (79/67 - 28/41 )
c) 38/45 - ( 8/45 - 17/51- 3/11 )
Tính hợp lí: a. 31/23 - (7/23 + 8/23). b.(1/3 + 12/67+13/41) - (79/67 - 28/41). c. 38/45 - (8/45 - 17/51 - 3/11)
\(a\frac{31}{23}-\left(\frac{7}{23}+\frac{8}{23}\right)\)
\(=\frac{31}{23}-\frac{7}{23}-\frac{8}{23}\)
\(=\frac{16}{23}\)
Hot
tốt
!
a)\(\frac{31}{23}-\left(\frac{7}{23}+\frac{8}{23}\right)=\frac{31}{23}-\frac{8}{23}+\frac{7}{23}=1+\frac{7}{23}=1\frac{7}{23}\)
b)\(\left(\frac{1}{3}+\frac{12}{67}+\frac{13}{41}\right)-\left(\frac{79}{67}-\frac{28}{41}\right)=\left(\frac{13}{41}+\frac{28}{41}\right)+\left(\frac{79}{67}-\frac{12}{67}\right)-\frac{1}{3}=1+1-\frac{1}{3}\)
\(=2-\frac{1}{3}=\frac{5}{3}\)
31/23-(7/22+8/23)+(1/3+12/67+13/41)-(79/67-28/41)
cai dau bai nay dung chua
cac ban giai can than guim minh nhe
Iam sorry ,I beg
tk nha thank you very much !!!!!!...............................................................!!!!!!!
mình cũng gặp bài giống bạn mà chưa có cách giải lúc nào giải được gửi bài làm giùm mình nha , cảm ơn nhiều !!!.....!!!
\(\frac{31}{23}-\left(\frac{7}{32}+\frac{8}{23}\right)+\left(\frac{1}{3}+\frac{12}{67}+\frac{13}{41}\right)-\left(\frac{79}{67}-\frac{28}{41}\right)\)
minh k biet xin loi ban nha!
minh k biet xin loi ban nha!
minh k biet xin loi ban nha!
minh k biet xin loi ban nha!
2/15-2/65-4/39
32/13-(7/23+8/23)
(1/3+12/67+13/41) - (79/67 - 28/41)
38/45 - (8/45-17/51-3/11)
2/15-2/65-4/39=4/39-4/39=0
32/13-(7/23+8/23)=32/13-15/23=541/299
(1/3+12/67+13/41) - (79/67 - 28/41)=6836/8241-1363/2747=1/3
38/145 - (8/45-17/51-3/11)=38/145-(-212/495)=1982/2871
12 + 23 + 45 + 67 = ?
=147 nha
-Tk cho mk nha-
-Mk cảm ơn-