Question

309/412=2014-a/512

Answer 1

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