![](https://rs.olm.vn/images/avt/0.png?1311)
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(-\frac{1}{16}-\frac{1}{15}\)
\(=-\left(\frac{1}{16}+\frac{1}{15}\right)\)
\(=-\frac{16+15}{16\times15}\)
\(=-\frac{31}{240}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
25-[50-(2^3.17-2^3.14)]
=25-[50-(8.17-8.14)]
=25-[50-(136-112)]
=25-[50-24]
=25-26
=-1
|-128|: [45^2-(2010-2008.1^2010)]
=128:[45^2-(2010-2008.1)]
=128:[45^2-(2010-2008)]
=128:[45^2-2]
=128:[2025-2]
=128:2023
=0,063 (chắc mik làm sai b đấy :( )
25-[50-(2^3.17-2^3.14)]=25-{50-[2^3.(17-14)]}
=25-{50-[8.3]}
=25-{50-24}
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
a) 341 . 67 + 341 . 16 + 659 . 83
= 341 . (67 + 16) + 659 . 83
= 341 . 83 + 659 . 83
= 83 .( 341+659)
= 83 . 1000 = 83000
b) 42 .53+ 47 . 156 -47 . 114
= 42 . 53 + 47. ( 156 -114)
=42 . 53 + 47 . 42
= 42 .(53 +47)
= 42 .100 =4200
a, \(341.67+341.16+659.83\)
\(=341\left(67+16\right)+659.83\)
\(=341.83+659.83\)
\(=83\left(341+659\right)\)
\(=83.1000=83000\)
b, \(42.53+47.156-47.114\)
\(=42.53+47\left(156-114\right)\)
\(=42.53+47.42\)
\(=42\left(53+47\right)\)
\(=42.100=4200\)
Chúc bạn học tốt!
![](https://rs.olm.vn/images/avt/0.png?1311)
(315x4+5.315):315
=(57395628+71744535):315
=129140163:315
=9
\(\frac{-1}{-16}-\frac{1}{15}\)
\(=\frac{1}{16}-\frac{1}{15}\)
\(=\frac{15-16}{16\times15}\)
\(=\frac{-1}{240}\)
c. ơn bn nha