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2x-5=4x-11
3x-7=5x-18
5x-6=7x+5
va rog repede​


Răspuns :

[tex]2x - 5 = 4x - 11[/tex]

[tex]2x - 4x = - 11 + 5[/tex]

[tex] - 2x = - 6[/tex]

[tex]x = 3[/tex]

[tex]3x - 7 = 5x - 18[/tex]

[tex]3x - 5x = 18 + 7[/tex]

[tex] - 2x = - 11[/tex]

[tex]x = \frac{11}{2} [/tex]

[tex]5x - 6 = 7x + 5[/tex]

[tex]5x - 7x = 5 + 6[/tex]

[tex] - 2x = 11[/tex]

[tex]x = - \frac{11}{2} [/tex]