78=e+12.2

Solution for 78=e+12.2 equation:

Simplifying
78 = e + 12.2

Reorder the terms:
78 = 12.2 + e

Solving
78 = 12.2 + e

Solving for variable 'e'.

Move all terms containing e to the left, all other terms to the right.

Add '-1e' to each side of the equation.
78 + -1e = 12.2 + e + -1e

Combine like terms: e + -1e = 0
78 + -1e = 12.2 + 0
78 + -1e = 12.2

Add '-78' to each side of the equation.
78 + -78 + -1e = 12.2 + -78

Combine like terms: 78 + -78 = 0
0 + -1e = 12.2 + -78
-1e = 12.2 + -78

Combine like terms: 12.2 + -78 = -65.8
-1e = -65.8

Divide each side by '-1'.
e = 65.8

Simplifying
e = 65.8