1The equation for calculating the area of a circle is A = πr^2, where A is the area and r is the radius.
2Can you solve the equation 2x + 5 = 11 for x?
3The scientist used a complex equation to model the behavior of the subatomic particles.
4Try to balance the equation by adding the same value to both sides.
5The economist developed a mathematical equation to predict the impact of interest rates on inflation.