Question

VA MAI CER INCA CEVA
UN EXERCITIU SI CHIAR PRIMU .
DACA MA AJUTATI COROANA O SA PURTATI

Answer 1

x*15/9supra5/9 =42/90supra375/100 => x=5/9*42/90 supra 375/100*15/9 => x=1/9*7/3 supra 15/4*5/3 => x=7/21 supra 5/4*5 => x=7/21 supra 25/4 => x=7/21*4/25 => x=28/525. Sper ca te.am ajutat...

Answer 2

1,(6)=(16-1)/9=15/9=simplif=5/3
0,(5)=5/9
0,4(6)=(46-4)/90=42/90=SIMPLIF=21/45=7/15
3,75=375/100=SIMPLIF=75/20=15/4
(x·5/3)/(5/9)=(7/15)/(15/4)
(5x/3)/(5/9)=7/15:15/4
5x/3:5/9=7/15·4/15
5x/3·9/5=28/225
3x=28/225
3x·225=28
675x=28
x=28/675
x=0,04(148)