1.
[tex]ax = bd \ \ /:x\\\\\underline{a = \frac{db}{x}}[/tex]
2.
[tex]\frac{a}{p} = qy \ \ /\cdot p\\\\\underline{a = pqy}[/tex]
3.
[tex]\frac{a}{v} = x+d+t \ \ /\cdot v\\\\\underline{a = v(x+d+t)}[/tex]
4.
[tex]Bc = xa \ \ /:x\\\\\underline{a = \frac{Bc}{x}}[/tex]
5.
[tex]a + c = xb\\\\\underline{a = xb - c}[/tex]
6.
[tex]\frac{a}{c} = dz \ \ \cdot c\\\\\underline{a = cdz}[/tex]
7.
[tex]\frac{a}{2}=c \ \ /\cdot2\\\\\underline{a = 2c}[/tex]
8.
[tex]\frac{3a}{7} = 20b \ \ /\cdot7\\\\3a = 140b \ \ /:3\\\\\underline{a = \frac{140}{3}b}[/tex]
9.
[tex]cab = de \ \ /:cb\\\\\underline{a = \frac{de}{ab}}[/tex]
