Question

F+V=E+2 solve for E Please help me

Answer 1

Answer:

$E=F+V-2$

Step-by-step explanation:

Solving for a variable is the same as isolating it. In other words, we want to get E alone on one side of the equation. To do that, we can simply subtract 2 from either side, giving us the equation for E $E=F+V-2$

Side note: This equation is one form of an extremely famous result about polyhedra, 3D solids made up of faces (F), vertices (V) and edges (E). Cubes, pyramids, and 12-sided dice (in math words, a dodecahedron) are all examples of these types of shapes, and the equation $F+V-E=2$ describes a relationship between the faces (polygons) vertices (points where three faces meet) and edges (lines where two edges meet). The 2 here specifically describes polyhedra that don't have some kind of hole in them. The Platonic solids (the ones in the attached photo) are all described by the relationship $F+V-E=2$

Answer 2

Step-by-step explanation:

$F+V=E+2 \\ F + V - 2 = E \\ E = F+V - 2$