Răspuns :
[tex]2x + 0.72 = 4.28[/tex]
[tex]2x = 4.28 - 0.72[/tex]
[tex]2x = 3.56 \: | \div 2[/tex]
[tex]x = 1.78[/tex]
[tex]2x = 4.28 - 0.72[/tex]
[tex]2x = 3.56 \: | \div 2[/tex]
[tex]x = 1.78[/tex]