9e-1=21.5

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Solution for 9e-1=21.5 equation: 


Simplifying
9e + -1 = 21.5

Reorder the terms:
-1 + 9e = 21.5

Solving
-1 + 9e = 21.5

Solving for variable 'e'.

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

Add '1' to each side of the equation.
-1 + 1 + 9e = 21.5 + 1

Combine like terms: -1 + 1 = 0
0 + 9e = 21.5 + 1
9e = 21.5 + 1

Combine like terms: 21.5 + 1 = 22.5
9e = 22.5

Divide each side by '9'.
e = 2.5

Simplifying
e = 2.5

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