Many bank accounts never go below zero. But some banks will allow a negative balance, at least for a short time, called an overdra...
3a sauared x b power5
-7x = 4
-20 = 5y
-18 = -3/2n
\frac{1}{2\cdot \pi \sqrt{2\cdot 10^{-3}\cdot 0,\:1\cdot 10^{-9}}}
14 = 2/3t
2x+15-3 = 24x
-2/3y = 20
((1/2)8)^2