E(7)=21

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Solution for E(7)=21 equation: 


Simplifying
E(7) = 21

Reorder the terms for easier multiplication:
7E = 21

Solving
7E = 21

Solving for variable 'E'.

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

Divide each side by '7'.
E = 3

Simplifying
E = 3

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