1e-21=30

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Solution for 1e-21=30 equation: 


Simplifying
1e + -21 = 30

Reorder the terms:
-21 + 1e = 30

Solving
-21 + 1e = 30

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 + 1e = 30 + 21

Combine like terms: -21 + 21 = 0
0 + 1e = 30 + 21
1e = 30 + 21

Combine like terms: 30 + 21 = 51
1e = 51

Divide each side by '1'.
e = 51

Simplifying
e = 51

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