3865+x=412
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
a) \(980+y:94=8245\)
\(y:94=7265\)
\(y=7265\times94\)
\(y=682910\)
b) \(45\times y\times36=3240\)
\(45\times y=3240:36\)
\(45\times y=90\)
\(y=90:45\)
\(y=2\)
c) \(3865-y+875=1000\)
\(3865-y=125\)
\(y=3865-125\)
\(y=3740\)
d) \(4788:126\times y=1596\)
\(126\times y=4788:1596\)
\(126\times y=3\)
\(y=\dfrac{3}{126}\)
\(y=\dfrac{1}{42}\)
e) \(24624:y:9=76\)
\(y:9=24624:76\)
\(y:9=324\)
\(y=324\times9\)
\(y=2916\)
1 a/ B = 2016 . 2016 - 2014 . 2018
=\(2016^2-\left(2016-2\right).\left(2016+2\right)\)
= \(2016^2-2016.\left(-2+2\right)\\\)
=\(2016^2-2016.0 \)
= \(2016^2\)
1: Tính
a) B = 2016 x 2016 - 2014 x 2018
= (2016 x 2016) - (2014 x 2018)
= 4064256 - 4064252
= 4
b) 327 x 412 + 400 / 328 x 412 -12
= (327 x 412 + 400) / ( 328 x 412 - 12)
= 135124 / 135124
= 1
c) ( 1234 x 567 - 667 ) : ( 567 + 1234 x 5)
= (1234 x 567 - 667) : (567 + 1234 x 566)
= [1234 x 566 + (1234 - 667)] / (1234 x 566 + 567)
= (1234 x 566 + 567) / (1234 x 566 + 567)
= 1
để thiếu bạn ơi
412-x = 16
412-x = 42
12 - x = 2
x = 12 - 2
x = 10
a.\(\frac{327.412+400}{328.412-12}=\frac{327.412+400}{\left(327+1\right).412-12}=\frac{327.412+400}{327.412+412-12}=\frac{327.412+400}{327.412+400}=1\)
b.\(\frac{1234.567-667}{1234.566+567}=\frac{1234.\left(566+1\right)-667}{1234.566+567}=\frac{1234.566+1234-667}{1234.566+567}=\frac{1234.566+567}{1234.566+567}=1\)
x=3865-412
x=4543
3865+x=412
x=3865-412
x=3453