Question

VA ROG MUULT, AM 4 EXERCITII, DAU 50 PUNCTE!!! VA ROG MULT DE TOT, VA ROG :((((
1) \frac{2}{3}•( \frac{5}{2} - \frac{5}{9}):\frac{4}{3} ;
2)[\frac{3}{4}•( \frac{8}{9} - \frac{1}{6}): \frac{5}{4} ;
3)[ \frac{1}{4}+( \frac{5}{2}-1\frac{3}{4}: \frac{7}{8}]•14 ;
4)28•[ \frac{7}{2}-(1+ \frac{3}{4} ): \frac{7}{8} ] ;

Answer 1

1)FRAC 2/3 * 5/2 - 5/9:4/3 = 
= 4/6 * 15/6- (5:9) : (4:3)=
=60/6 - 0,(5) : 1,(3)=
=60/6 -2,400000024=
=60:6 -2,400000024 =
=10 -2,400000024=
=7,5999999976

2) 3/4*8/9-1/6:5/4 =
=27/36 * 72/36 - 0,1666666667 : 1,25=
=1944/36 - 0,1333333328=
=54 -0,333333328=
=53,666666672

3)1/4+5/2 -3/4 :7/8 * 14=
=1/4 + 10/4 -0,875 * 14 =
=1/4 +10/4 -10,5 =
=11/4 -10/5 =
=55/20 - 40/20 =
=35/20=
=35:20 =
=1,75

4) 28 *7/2 -1+3/4:7/8=
=28*3,5 -1 +0,75 :0,875=
=98-1+0,8571428571
=99+0,8571428571=
=99,8571428571

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