tim a biet 309/412=2014-a/512
tim a biet 309/ 412 = 2014 - a / 512
\(\frac{309}{412}=\frac{2014-a}{512}\)
Ta có : 2014 - a = 512 x 309 : 412 = 384
2014-a=384
a = 2014 - 384
a = 1630
Đáp số :----------------------------
Ungr hộ nhé
\(\frac{309}{412}\)\(=\)\(\frac{3}{4}\)=\(\frac{2014-a}{512}\)
512:4x3=384
2014-384=1630
tim a biết 309/412= (2014-a) /512
tim a biết :
309/412=2014-a/512
A=
309/412=2014-a/512
Ta có:\(\frac{309}{412}=\frac{3}{4}\)
Mà \(\frac{3}{4}=\frac{384}{512}\) nên \(\frac{384}{512}=\frac{2014-a}{512}\)
Khi đó 2014-a=384
a=2014-384
a=1630
309/412=2014-a/512
309/412=2014-a/512
309/412 = 2014 - a/512
a = 2014 - 309/412
a = 1030784
Mk đầu tiên nha
309/412=2014-a/512
k cho mih truoc di roi mih giai cho.
mih chac chan cau nay do
309/412=2014-a/512
309/412 = 2014 - a/512
a = 2014 - 309/412
a = 829459
309/412=2014-a/512
309 / 412 = 3/4 = 384 / 512 = 2014 - a / 512
=> 2014 - a = 384
=> a = 2014 - 384
=> a = 1630