a)
[tex]Pc = Pp + Pb | - Pp \\ Pb = Pc - Pp | - Pc \\ Pp = Pb - Pc[/tex]
b)
[tex]P = a \times h | \div a \\ h = \frac{P}{a} \\ \\ \\ P = a \times h | \div h \\ a = \frac{P}{h} [/tex]
c)
[tex]a = \frac{F}{m} | \times m \\ F = a \times m | \div a \\ m = \frac{F}{a} [/tex]
d)
[tex]d = \frac{m}{V} | \times V \\ m = d \times V | \div d \\ V = \frac{m}{d} [/tex]
