4e=e+21

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Solution for 4e=e+21 equation: 


Simplifying
4e = e + 21

Reorder the terms:
4e = 21 + e

Solving
4e = 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.
4e + -1e = 21 + e + -1e

Combine like terms: 4e + -1e = 3e
3e = 21 + e + -1e

Combine like terms: e + -1e = 0
3e = 21 + 0
3e = 21

Divide each side by '3'.
e = 7

Simplifying
e = 7

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