7256 x 4375 -725 / 3650 + 4375 x 7256
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7256 * 4375 - 725 = 31745000 - 725 = 31744275
3650 + 4375 * 7255 = 3650 + 31740625 = 31744275
OK
7256*4375-725/3650+4375*7255
= 7256 * 4375 + 4375 * 7255 - 29/146
= 4375* ( 7256+7256) -29/146
= 4375* 14512 -29/146
= 63490000- 29/146
7256 x 4375 - 725
= 31745000 - 725
= 31744275
3650 + 4375 x 7255
= 3650 + 31740625
= 31744275
7256 . 4375 - \(\frac{725}{3650}\) + 4375 . 7256
= (7256 . 4375 - 4375 . 7256) + \(\frac{725}{3650}\)
= 0 + \(\frac{725}{3650}\)
= \(\frac{725}{3650}\)
\(\dfrac{7256.4375-725}{3650+4375.7255}\)
\(=\dfrac{\left(7255+1\right).4375-725}{3650+4375.7255}\)
\(=\dfrac{7255.4375+1.4375-725}{3650+4375.7255}\)
\(=\dfrac{7255.4375+3650}{3650+4375.7255}=1\)
\(\dfrac{7256.4375-725}{3650+4375.7255}=\dfrac{\left(7255+1\right).4375-725}{3650+4375.7255}\)
\(=\dfrac{7255.4375+4375-725}{3650+4372.7255}=\dfrac{7255.4375+3650}{3650+4375.7255}=1\)
a) Ta có: \(347\cdot2^2-2^2\left(216+184\right):8\)
\(=347\cdot4-4\cdot400:8\)
\(=1388-200=1188\)
b) ( 7256 . 4375 - 725 ) : ( 3650 + 4375 . 7255 )
= ( 31745000 - 725 ) : ( 3650 + 31740625 )
= 31744275 : 31744275
=1
=63489999.8