Question

(7/2-3/5x)×3/17=1/2 vrg​

Answer 1

Răspuns:

Explicație pas cu pas:

Paranteza rotunda

(7/2- 3/5 x)

Aducem la acelasi numitor

( (7 ori 5)/(2 ori 5) - (3 ori 2)/ (5 ori 2) x)=

= (35/10- 6/10x)= (35-6x)/10

Acum avem

(35-6x)/10 ori 3/17=( 3 ori 35- 3 ori 6x)/ (10 ori 17)= (105- 18x) /170

Acum avem

(105-18x) /170=1/ 2

Asta inseamna ca

2 ori (105-18x)= 1 ori 170

210-36x=170

210-170=36x

40=36x

X=40/36 se simplifica cu 4

X= 10/9

Answer 2

Răspuns:

(⁵⁾7/2-²⁾3x/5)·3/17=1/2

(35/10-6x/10)·3/17=1/2

(35-6x)/10·3/17=1/2

[3(35-6x)/170]=1/2

(105-18x)/170=1/2

2(105-18x)=170

210-36x=170

-36x=170-210

-36x=-40·(-1)

x=40/36=10/9