198-(-60-320)

=198+60+320

=578

1 like

198-(-380)=198+380=578

đợi mãi mà chẳng có ai giúp hết zợ

haizzz..."tỏ ra ý chán nản"

DÀI QUÁ

dễ mah

=560

=560

198-(-60-302)

=198+60+302

=(198+302)+60

=500+60

=560

=198+60+302

=500+60

=560

Mình cần gấp giúp mình với 

= 560

$900-{320:[31-(5.3)]}+[60.(3^{2}-70)]$

$=900-[320:(31-15)]+[60.(9-70)]$

$=900-(320:16)+[60.(-61)]$

$=900-20-3660$

$=-2780$

\(900-\left(320:\left(31-\left(5.3\right)\right)\right)+\left(69.\left(3^2-70\right)\right)\)

\(=900-\left(320:\left(31-15\right)\right)+\left(69.\left(9-70\right)\right)\)

\(=900-\left(320:16\right)+\left(69.\left(-61\right)\right)\)

\(=900-20+\left(-4209\right)\)

\(=900-20-4209=-3329\)

\(\dfrac{121\times75\times130\times169}{39\times60\times11\times198}\)

\(=\dfrac{25\times169}{6\times18}\)

\(=\dfrac{4225}{108}\)

668068830000

= 199377750/5096520

=4225/108

BCNN ( 60 ; 32 ) = 320

ƯCLN ( 120 ; 320 ; 80 ) = 40

\(60=2^2.3.5\)

\(32=2^5\)

\(BCNN\left(60;32\right)=2^5.3.5=480\)

BCNN ( 60; 32 ) = 480

Ư CLN ( 120 ; 320 ; 80 ) = 40