What is the difference between an expression and an equation? Provide an example of each. pls give an example and help me asap!

Expressions are not meant to be solved, they are more so to be evaluated and explained.. a visual differenceis that there is no equal sign or answer written, an equation is solved and has an equal answer. EXPR: (2 x 13) + 9 EQU: (19 x 12) + 3= 231

point a is the center of the circle that passes through points e, f, and g and the center of the circle that passes through points x, y, and z.