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a fost răspuns

5x-2 supra 2x+3 = 8 supra 7 sa se determine x

Răspuns :

5x-2=8
5x=8+2=10
x=10:5
x=2

2x+3=7
2x=7-3
2x=4
x=4:2
x=2

verificare
5x2-2/2x2+3=8/7
Parola12
[tex]\frac{5x-2}{2x+3}=\frac{8}{7}[/tex]
[tex]7(5x-2)=8(2x+3)[/tex]
[tex]35x-14=16x+24[/tex]
[tex]35x-14x=24+14[/tex]
[tex]19x=38[/tex]
[tex]x=38:19[/tex]
[tex]\boxed{x=2}[/tex]

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