e-21=9

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Solution for e-21=9 equation: 


Simplifying
e + -21 = 9

Reorder the terms:
-21 + e = 9

Solving
-21 + e = 9

Solving for variable 'e'.

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

Add '21' to each side of the equation.
-21 + 21 + e = 9 + 21

Combine like terms: -21 + 21 = 0
0 + e = 9 + 21
e = 9 + 21

Combine like terms: 9 + 21 = 30
e = 30

Simplifying
e = 30

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