7(3)=e

Solution for 7(3)=e equation:

Simplifying
7(3) = e

Multiply 7 * 3
21 = e

Solving
21 = 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.
21 + -1e = e + -1e

Combine like terms: e + -1e = 0
21 + -1e = 0

Add '-21' to each side of the equation.
21 + -21 + -1e = 0 + -21

Combine like terms: 21 + -21 = 0
0 + -1e = 0 + -21
-1e = 0 + -21

Combine like terms: 0 + -21 = -21
-1e = -21

Divide each side by '-1'.
e = 21

Simplifying
e = 21