[tex]15 : a = \frac{3}{2}[/tex]
[tex]\frac{15}{a} = \frac{3}{2}[/tex] Sprawdzenie:
3a = 15*2 15 : 10 = [tex]\frac{3}{2}[/tex]
3a = 30 /:3 [tex]\frac{15}{10} = \frac{3}{2}[/tex]
a = 10 [tex]\frac{3}{2} = \frac{3}{2 }[/tex]
[tex]\frac{2}{5}a - 16 = 24[/tex] /*5
2a - 80 = 120 Sprawdzenie:
2a = 120 + 80 [tex]\frac{2}{5}*100 - 16 = 24[/tex]
2a = 200 /:2 40 - 16 = 24
a = 100 24 = 24
[tex]7a = 3 - 1\frac{5}{6}[/tex]
[tex]7a = 3 - \frac{11}{6}[/tex] Sprawdzenie:
[tex]7a = \frac{7}{6}[/tex] /:7 [tex]7*\frac{1}{6} = 3-\frac{11}{6}[/tex]
a = [tex]\frac{7}{6} : 7 = \frac{7}{6} * \frac{1}{7} = \frac{1}{6}[/tex] [tex]\frac{7}{6} = \frac{7}{6}[/tex]
a = [tex]\frac{1}{6}[/tex]
