[tex]2.(6) + a = 4.8(3)[/tex]
[tex] \frac{26 - 2}{9} + a = \frac{483 - 48}{90} [/tex]
[tex] \frac{24}{9} + a = \frac{435}{90} [/tex]
[tex] \frac{8}{3} + a = \frac{145}{30} \: | \times 30[/tex]
[tex]80 + 30a = 145[/tex]
[tex]30a = 145 - 80[/tex]
[tex]30a = 65 [/tex]
[tex]a = \frac{65}{30} [/tex]
[tex]a = \frac{13}{6} [/tex]
[tex]a=2.1(6)[/tex]
[tex]2.5 - a = 1.(6)[/tex]
[tex]2.5 - a = \frac{16 - 1}{9} [/tex]
[tex]2.5 - a = \frac{15}{9} [/tex]
[tex]2.5 - a = \frac{5}{3} \: | \times 3[/tex]
[tex]7.5 - 3a = 5[/tex]
[tex] - 3a = 5 - 7.5[/tex]
[tex] - 3a = - 2.5 \: | \times ( - 1)[/tex]
[tex]3a = 2.5[/tex]
[tex]a = \frac{2.5}{3} [/tex]
[tex]a = \frac{ \frac{25}{10} }{3} [/tex]
[tex]a = \frac{25}{10} \times \frac{1}{3} [/tex]
[tex]a = \frac{25}{30} [/tex]
[tex]a = \frac{5}{6} [/tex]
[tex]a=0.8(3)[/tex]
