2e+1=21-8e

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Solution for 2e+1=21-8e equation:


Simplifying
2e + 1 = 21 + -8e

Reorder the terms:
1 + 2e = 21 + -8e

Solving
1 + 2e = 21 + -8e

Solving for variable 'e'.

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

Add '8e' to each side of the equation.
1 + 2e + 8e = 21 + -8e + 8e

Combine like terms: 2e + 8e = 10e
1 + 10e = 21 + -8e + 8e

Combine like terms: -8e + 8e = 0
1 + 10e = 21 + 0
1 + 10e = 21

Add '-1' to each side of the equation.
1 + -1 + 10e = 21 + -1

Combine like terms: 1 + -1 = 0
0 + 10e = 21 + -1
10e = 21 + -1

Combine like terms: 21 + -1 = 20
10e = 20

Divide each side by '10'.
e = 2

Simplifying
e = 2

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