Question

dao corona ajutati-ma va rog la astea doua​

Answer 1

Răspuns:

Explicație pas cu pas:

La prima

18 intregi si 4/5= (18 ori 5+4)/5= 94/5

Deci (x+1)/ q8 intregi si 4/5= (x+1)/ 94/5=(x+1) :94/5= (x+1) ori 5/94= (5x+5)/94

1 intreg si 3/10= (1 ori 10+3)/10= 13/10

1 intreg si3/10 /7,2= 13/10/7,2=13/10 :7,2= 13/10 :72/10= 13/10 ori 10/72= 13/72

Acum vom avea

(5x+5)/94 = 13/72

72 ori (5x+5)= 94 ori 13

72 ori (5x+5)= 1222

5x+5= 1222/72 simplificam cu 2

5x+5= 611/ 36

5x= 611/36 -5

5x= 611/36 -180/36

5x=431/36

X= 431/36 :5

X=431/36 ori 1/5

X=431/180

La punctul d)

25 intregi si 1/5= (25 ori 5+1)/5=126/5

Dexi 14/25 intregi si 1/5= 14/126/5= 14 :126/5= 14 ori 5/126=1 ori 5/9= 5/9

Deci acum avem

5/9= 15/(2x-1)

5 ori (2x-1)= 9 ori 15

(2x-1)= (9 ori 15)/5

(2x-1)= (9 ori 3)

2x-1=27

2x=27+1

2x=28

X=28:2

X=14